Pentair 460736 Mastertemp 400 And Problems Related To It. Check on the unit’s wiring to ensure that isn’t the problem. HLS – High Limit Switch Error 3. All MasterTemp heaters are designed with a direct ignition device, HSI (hot-surface ignition), which eliminates the need for a standing pilot. Troubleshooting Pool Heater Thermal Regulator (Thermostat) TDK DJMASK Solutions 123 subscribers 5. • If you cannot reach your gas supplier, call the fire department. “Spa on” and “Pool on” are just 2 different temperature settings. The most common problems are listed down below: Corrosion and Boiling of Heat Exchanger Water Circulation is Low Sweating Scaling Waters Control Board’s Voltage Supply Low Icy Residue. Adjusting the water pressure switch is a simple way to do this. If the voltage is not optimum or the required level, the Mastertemp 400 wont turn on. It’s possible that you’ll need to hire an expert to inspect your heater. Step 2: Separate the Max-E-Therm heater from the system. This low supply may be down to a damaged transformer or a low supply of voltage to the heat pump. With a ⅞ deep socket, loosen up the thermistor and take it out. Initial Troubleshooting / Error and Fault Codes 62 Replacement Parts MASTERTEMP POOL AND SPA HEATER (AUSTRALIA) (FOR OUTDOOR USE ONLY*) INSTALLATION AND USERS GUIDE 240 VAC NATURAL GAS/LP GAS MODELS 200HD (200 MJ/h) 300HD (300 MJ/h) 400HD (400 MJ/h) FOR YOUR SAFETY – This product must be. Pentair Mastertemp 400 issue. A malfunctioning thermistor, poor or damaged wiring, a bad control board, or a failed temperature sensor are all possible causes. Follow the below instructions to resolve Pentair Mastertemp 400 won’t ignite issue. Use arrow button (UP) to change this to FS1. Remove the panel by lifting it up. Pooltek Services / Rockville, MD / Pooltek Services. Robzilla8233 165 subscribers Subscribe 121K views 6 years ago Trouble shooting a mastertemp that will not turn on when buttons are pressed. Ideally, the Mastertemp 400 will last for up to 15 years with good maintenance. Pentair Mastertemp 400 ignition problem. Savings and control from anywhere? You’re getting …. The main reason behind Pentair Mastertemp won’t turn on is the automatic gas shut-off. The ETi 400 is designed to accommodate the features that make your pool fun. Pentair Mastertemp 400 Heater not turning on. I highly recommend Pentair heaters and all Pentair pool products. I pulled the sensors and they were heavily corroded. Pentair Mastertemp 400 Igniter Troubleshooting and Replacement TDK DJMASK Solutions 121 subscribers Subscribe 172 Share 27K views 1 year ago Pool heater failing. Mastertemp 250- turn pool up to 85 and heater. Go to advanced system setting then installation setup then heaters. *Savings based on lab testing conducted using MasterTemp 400 heater in conjunction with IntelliFlo VSF Pump and Bypass Kit which includes IntelliValve controlled by heater. MasterTemp 400 Heating Light Flashing. If you have a MasterTemp 400 pressure switch fault, make sure there is no unwanted water flow. The MasterTemp. Solution: Perform the following tests to determine the gas. Pentair Mastertemp 400 ignition problem. Inaccurate Temperature Control or Display. MasterTemp heaters are available in a range of heat output capacities from 175,000 BTU to 400,000 BTU. Pentair MasterTemp 400 heating light flashing is caused when the heater is calling for heat but not igniting. Pentair mastertemp 400 high performance heater not heating hot tub … read more BillyHvac Journeyman Service Techni State Licensed Mechanical 17,162 satisfied customers The service required light is on and the pool heater will The service required light is on and the pool heater will not turn off. If your Pentair Mastertemp 250 heater keeps shutting off, it is sure the heater is not set at the correct temperature. Three potential causes addressed: High limit sensor, thermal regulator, bypa. Now, ensure that the thermal regulator is where it should be. *Savings based on lab testing conducted using MasterTemp 400 heater in conjunction with IntelliFlo VSF Pump and Bypass Kit which includes IntelliValve controlled by heater. Improperly Grounded Burner Flame Holder 3. When the Pentair Mastertemp 400 is leaking water, its usually due to a faulty part in the heat exchanger. Presently, we should discuss those issues exhaustively. Set controller to turn your heater on. com Before I continue any further, we should examine those issues: 1. Mastertemp 250 Troubleshooting Guide. The only way to solve this issue is to replace the ICM. Pentair MasterTemp 400 Common Problems [15 Easy Fixes] 1. Pentair Mastertemp 400 Common Problems and How to Fix Them 1. Check out the fuel level as well. Turn heater OFF on Heater display. Solution Enquire about how much voltage is being supplied to the heat pump. We have 3 Pentair MASTERTEMP 400 HD manuals available for free PDF download: Installation And User Manual, Brochure Pentair MASTERTEMP 400 HD Installation And User Manual (68 pages) POOL AND SPA HEATER (FOR OUTDOOR USE ONLY) Brand: Pentair / Category: Heater / Size: 10. Afterward, the service heater light should no longer be on. Click to expand Thanks for the advice. Pentair Mastertemp 400 Heater not turning on. UPGRADE OPTION Plumbing aligns to MasterTemp® High Performance Heater, for easy drop in replacement. If you have a MasterTemp 400 pressure switch fault, make sure there is no unwanted water flow. We recently gave the filter a good cleaning and now the heater won’t stay running. Pentair Mastertemp 400 Heater not turning on. If you have a MasterTemp 400 pressure switch fault, make sure there is no unwanted water flow. (1) Thermistor Replacement 42001-0053S. So I went to the Pentair MasterTemp 400 and saw that the red Service System light was on, and read that it is a pressure/flow issue. Look for blown or faulty control fuse. Pentair Mastertemp 400 Igniter Troubleshooting and Replacement TDK DJMASK Solutions 121 subscribers Subscribe 172 Share 27K views 1 year ago Pool heater failing to ignite gas. Curious if anyone can help troubleshoot or diagnose issue with our pentair heater. Pentair MasterTemp 400 Heating Light Flashing. When the Pentair Mastertemp 400 is leaking water, it’s usually due to a faulty part in the heat exchanger. When the water flow through the heater. Bubbling in Hotness Exchanger 5. Defective Control Board FAQs: How do you unlock the Pentair pool pump? What does a thermal regulator do in a pool heater?. First turn the heater on at the intellicenter (doesn’t matter if it’s for pool or spa) by touching the heat mode button and select heater. Minim um Flo w Requirements Model Flo w 200 20 GPM (76 LPM) 333 30 GPM (114 LPM) 400 40 GPM (151 LPM) Is red ÒSER VICE. The MasterTemp also comes equipped with the Pentair multifunction temperature controller which shows, at a glance, the proper functioning of the heater. Give it a few seconds and the blower should kick on, then max out the temp on the heater to 104*. If the membrane pad is asking the system to heat the operating control should be putting out 24V measured to ground through the operating control TH to the Ignition. The easiest way to troubleshoot is to attach one meter lead to the 24V ground in the system and trace the other 24V leg through the controls with the other meter lead. Mastertemp 250 Keeps Shutting Off. Savings and control from anywhere? You’re getting warmer…. Recall for StaRite & Mastertemp brand heater models produced from 12/22/20 – 1/6/21, approximately 4,700 units This isn’t the first major recall for Pentair brand heaters. Your Pentair MasterTemp 400 may be unable to heat the water due to a lack of sufficient gas pressure. Display initially shows 66 degrees (my controller shows 71). Pentair pool heater turns on but does not heat, how to fix. Line Voltage Between Pin 1 And 3 4. First turn the heater on at the intellicenter (doesnt matter if its for pool or spa) by touching the heat mode button and select heater. Finally, check the burner flame holder is securely grounded. Pentair Mastertemp 400 issue Curious if anyone can help troubleshoot or diagnose issue with our pentair heater. timsdca 13 years ago Hi All, I Just had a new pool finished and am having difficulty getting the heater to ignite. Pentair Mastertemp 400 issue Curious if anyone can help troubleshoot or diagnose issue with our pentair heater. Pentair pool heater turns on but does not heat, how to fix. An ignition failure can be the result of a failed flame sensor, bad igniter, malfunctioning 2. Pentair MASTERTEMP 400 HD Manuals. commentssorted by Best Top New. Pentair Mastertemp 400 won’t turn on mainly due to the defective igniter, incorrectly grounded burner flame holder, malfunctioning Ignition. , Sanford, NC 27330 (919) 566-8000 •. Already known as being dependable and efficient, MasterTemp now offers smart features and an optional energy-saving Smart Bypass Valve Kit to help you ensure your pool is ready whenever you are. The Heater Shuts Down After a Few Minutes of Turning On. Master temp 400 not starting up and display reads 126, Master temp 400 not starting up and display reads 126 … read more Randy Huckstadt Owner: Cool Runnings Hea Associate Degree 781 satisfied customers Pentair Mastertemp 125 on start up control pad shows water Pentair Mastertemp 125 on start up control pad shows water temp at 126. Among the most common problems associated with all pool heaters and not. Operation & installation manual Pentair MasterTemp Operation & Installation Manual 120/240 vac natural gas/lp gas mastertemp pool & spa heater Also See for MasterTemp: Installation instructions manual (8 pages) , Brochure (4 pages) , Instructions (2 pages) 1 2 3 Table Of Contents 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28. Mastertemp Heaters are #1 I love installing mastertemps. With operation, heater turns on, goes through light show, green spa or pool light is on, yellow heat light flashes, but after about 2-3 minutes red service heater light comes on. Pentair MasterTemp 400 Common Problems [15 Easy Fixes] 1. Then go to the heater controls and press spa on. Your Pentair MasterTemp 400 temp sensor location is near the high-limit switch. Pentair Mastertemp 400 Won’t Turn On [10 Troubleshooting Tips] 1. I cleaned them up and im still having the issue. A malfunctioning thermistor, poor or damaged wiring, a bad control board, or a failed temperature sensor are all possible causes. Brand new Pentair Mastertemp heater not working, error code >Brand new Pentair Mastertemp heater not working, error code. If the membrane pad is asking the system to heat the operating control should be putting out 24V measured to ground through the operating control TH to the Ignition Module TH. Solution: To fix the error codes E01 and E126 with your Pentair pool heater, very first, inspect whether the thermistor is working. Your regulator is sensitive to water chemistry. 476072 - ETi 400 Natural Gas to Propane Conversion Kit - The ETi 400 heater is factory-configured for use with Natural Gas. For applications using Propane Gas, this conversion kit is required. Error Code E05: Stack Flue Sensor Is Open 2. Turn the Pentair heater on. Pentair mastertemp 400 high performance heater not heating hot tub … read more BillyHvac Journeyman Service Techni State Licensed Mechanical 17,162 satisfied customers The service required light is on and the pool heater will The service required light is on and the pool heater will not turn off. Solution: First, power cycle the heater to erase all the unwanted factors. These Pentair MasterTemp 400 Problems 3. Pentair MasterTemp Operation & Installation Manual. 5K views 3 years ago Temperature testing the thermal regulator from a. Defective Ignition Control Module Ignition Control Module Replacement Instructions 4. Pentair MasterTemp 400 Not Heating. Remove the wiring connections that go into the thermistor. Your Pentair MasterTemp 400 may be unable to heat the water due to a lack of sufficient gas pressure. The company voluntarily recalled approximately 105,000 units of it’s popular MiniMax® NT STD gas pool heater. With a ⅞” deep socket, loosen up the thermistor and take it out. How To Deal With Pentair Heater Error Code R13 …. Troubleshooting Pool Heater Thermal Regulator (Thermostat) TDK DJMASK Solutions 123 subscribers 5. Mastertemp Heaters are #1 I love installing mastertemps. Pentair Mastertemp 400 Igniter Troubleshooting and Replacement. AGS- Automatic Gas Shutoff Error 5. Mastertemp 250 Keeps Shutting Off. Pentair pool heater turns on but does not heat, how to fix. 5K views 3 years ago Temperature testing the thermal regulator from a Pentair Mastertemp 400. Ignition problems are pretty common among all gas-powered 2. Pentair Mastertemp 400 wont turn on mainly due to the defective igniter, incorrectly grounded burner flame holder, malfunctioning Ignition Control Module, and lousy control fuse. You need to fix these error codes by servicing your heater. Ascertain if the gas pressure is adequate. Pentair Master Temp 400 Pool and Spa Heater HLS Error Light Repair Replace Manifold Bypass Valve PVT-PILOT 62K views MiniMax NT Pool heater starts and then shuts off on error code EO4 Donald. connected to schedule 40 PVC pipe. Whether you are troubleshooting your heater for one specific problem, or simply looking to tune up your Pentair® MasterTemp® or Max-E-Therm®, this repair kit has what you need! This Kit Includes: (1) Stack Flue Sensor Replacement 42002-0024S (1) Thermistor Replacement 42001-0053S (1) Pressure Switch Replacement 3902. Mastertemp 400 issue : r/pools. Pentair Mastertemp 400 Common Problems [11 Easy Solutions] 1. Step 1: Begin by removing the back panel. Normal Issues With Pentair Mastertemp 400 Source: chainsawjournal. The heater function might not be enabled for spa under the heater. Handle any blockages, soot, or leaking in the heat exchanger coils. Pentair Mastertemp 400 Common Problems: How To Solve Them?. Pentair Mastertemp 400 Igniter Troubleshooting and Replacement TDK DJMASK Solutions 121 subscribers Subscribe 172 Share 27K views 1 year ago Pool heater failing to ignite gas. Optimized Heating For every $1 of natural gas that’s piped into the heater, 96 cents goes directly to heating your pool. Pentair Mastertemp 400 Heater not turning on. Then HOLD OFF for about 10 seconds. Pooltek Services / Rockville, MD / Pooltek Services. Your Pentair MasterTemp 400 temp sensor location is near the high-limit switch. Mastertemp 250- turn pool up to 85 and heater fires up and after about 15 mins shuts off and Service Heater light turns on. Faulty Igniter Igniter Replacement Instructions 2. How To Deal With Pentair Heater Error Code R13. This low supply may be down to a damaged transformer or a low supply of voltage to the heat. #1 Friday evening we went to heat the spa, only to find that the temp did not rise after 15 minutes. Pentair Mastertemp 400 Heater Not Turning On If your Pentair Mastertemp 400 won’t turn on, for sure, the heater is 2. We have 3 Pentair MASTERTEMP 400 HD manuals available for free PDF download: Installation And User Manual, Brochure Pentair MASTERTEMP 400 HD Installation And User Manual (68 pages) POOL AND SPA HEATER (FOR OUTDOOR USE ONLY) Brand: Pentair / Category: Heater / Size: 10. Recall for StaRite & Mastertemp brand heater models produced from 12/22/20 – 1/6/21, approximately 4,700 units This isn’t the first major recall for Pentair brand heaters. The Heater Shuts Down After a Few Minutes of Turning On. (1) Pressure Switch Replacement 3902. 86 MB Table of Contents Product HIN / Code Requirements / Safety Warning 2. All MasterTemp heaters are designed with a direct ignition device, HSI (hot-surface ignition), which eliminates the need for a standing pilot. Tighten the thermistor with a ⅞ deep socket. This document is subject to change without notice. Solution: Perform the following tests to determine the gas pressure. Save money and energy with the MasterTemp High-Performance Heater. There are four screws that need unscrewing. Pentair Mastertemp 400 Won’t Turn On [10 Troubleshooting Tips] 1. Page 2 Follow the gas suppliers instructions. Pentair Mastertemp 400 Common Problems The most common problems are listed down below: Corrosion and Boiling of Heat Exchanger Water Circulation is Low Sweating Scaling Waters Control Boards Voltage Supply Low Icy Residue Corrosion and Boiling of Heat Exchanger The worst-case scenario for a water heater is corrosion of the heat exchanger. #1 Friday evening we went to heat the spa, only to find that the temp did not rise after 15 minutes. You would however if your by-pass had broken. MasterTemp heaters are available in a range of heat output capacities from 175,000 BTU to 400,000 BTU. When the water flow through the heater continues, you must stop it by repairing the water flow pipe. Remove the four screws with a 38-inch nut driver. The ETi 400 is designed to accommodate the features that make your pool fun. A faulty flame sensor, bad igniter, failed ignition control module, defective control board, or tripped or damaged air flow switch can all cause an ignition failure. Troubleshooting a high limit sensor error (HLS) on a Pentair Mastertemp. Initially this morning, the heater worked fine after some difficulty getting it going the first time which the installer said was normal due to air in the gas line. When your thermal reg has a problem, you wont usually get the banging you are experiencing. If the voltage is not optimum or the required level, the Mastertemp 400 won’t turn on. troubleshooting: service heater light is on!>Pentair pool heater troubleshooting: service heater light is on!. Associate Degree. Let me know if you had to change this or it was already FS1. Pentair Recall on StaRite and Mastertemp Pool Heaters. Yours (in the picture), should be replaced either way. How to find “ hidden” error codes on a Pentair Mastertemp. A faulty flame sensor, bad igniter, failed ignition control module, defective control board, or tripped or damaged. Table Of Contents Pentair MasterTemp 400 Service Heater Light On [5 Easy Fixes] 1. There should be a thermal regulator there. I did set the temp on the heater to 104 for spa. There are some common temperature issues that users face. Pentair pool heater turns on but does not heat, how to fix. Pentair MASTERTEMP 200HD Installation And User Manual. When your thermal reg has a problem, you wont usually get the banging you are experiencing. Pentair Mastertemp 400 Igniter Troubleshooting and. After completing these steps, your Pentair service heater light should no longer be on. Pentair Mastertemp 400 ignition problem. Pentair Mastertemp 400 issue : r/pools. MASTERTEMP 400 Combination Gas Control Valve Troubleshooting. First turn the heater on at the intellicenter (doesn’t matter if it’s for pool or spa) by touching the heat mode button and select heater. Pentair MasterTemp 400 Common Problems [15 Easy Fixes] 1. Pentair MasterTemp 400 heating light flashing is caused when the heater is calling for heat but not igniting. The MasterTemp also comes equipped with the Pentair multifunction temperature controller which shows, at a glance, the proper functioning of the heater. The following instructions will guide you through Pentair MasterTemp 400 Ignition control module replacement. Pentair Mastertemp 400 Common Problems: How To Solve …. The easiest way to troubleshoot is to attach one meter lead to the 24V ground in the system and trace the other 24V leg through the controls with the other meter lead. Mastertemp 400 Common Problems and How to Fix Them>Pentair Mastertemp 400 Common Problems and How to Fix Them. The compact size and accessibility makes installation alot easier compared to competitors. Your heater has no idea if it’s heating a pool, spa, bathtub or fish pond. Change the faulty igniter and the bad ignition module. There are 3 screws to remove before lifting off the panel. 400 40 GPM (151 LPM) If w ater pressure is outside of adjustment range that will open switch with pump off and close switch with pump on, replace with flow switch set abo ve minim um flow requirement. Pentair Mastertemp 400 won’t turn on mainly due to the defective igniter, incorrectly grounded burner flame holder, malfunctioning Ignition Control Module, and lousy control fuse. Pentair Mastertemp 400 gas pool heater cycling due to a high limit sensor error. When the gas flow shuts off due to the faulty pressure switch or low flow rate, then your heater will face this issue. Pentair MasterTemp 400 Blower Not Working [6 Easy Fixes] 1. Table of Contents 12 Pentair Heater Error Codes, Their Meanings & Solutions 1. Pentair Mastertemp 400 Heater not turning on. Other reasons why the heater is not turning on include: Faulty igniter The defective ignition control module Bad control fuse. No Power To Blower During Ignition 5. Make sure affiliated body is pool/spa. Pool & Spa Equipment Customer Service. MASTERTEMP 400 Combination Gas Control Valve Troubleshooting>MASTERTEMP 400 Combination Gas Control Valve Troubleshooting. 475612 - ETi 400 Condensate Neutralizer Replacement Kit - ETi 400 heater produces condensate while in operation. As of recently it fires up for about 5 min and then will just turn off. Curious if anyone can help troubleshoot or diagnose issue with our pentair heater. Clean the clogged water filter to ensure a fluent water flow. Heater Turns On Automatically 7. Pentair Mastertemp 400 Common Problems The most common problems are listed down below: Corrosion and Boiling of Heat Exchanger Water Circulation is Low. connected to schedule 40 PVC pipe. Have installed 100s of these with excellent customer feedback. I checked the temperature about 15 minutes after the heater fires up, one sensor is reading 140s (around 145) and the other reads 165-166. Also, the other responsible factors are the wet heater, sensor problem, faulty membrane switch, tripping safety switches, and no power on. Look for blown or faulty control fuse. The optimum level of the voltage supply is between 208 to 260 volts. This document is subject to change without notice. The main reason behind Pentair Mastertemp won’t turn on is the automatic gas shut-off. Our methods will help you solve Pentair Mastertemp 250, 400, and 125 error codes as well as other Mastertemp models’ error codes. Pool & Spa Pentair Pool Filters, Pool Pumps, Pool Heaters, Pool Lighting & Pool Automation. If your Pentair Mastertemp 250 heater keeps shutting off, it is sure the heater is not set at the correct temperature. Your Pentair MasterTemp 400 may be unable to heat the water due to a lack of sufficient gas pressure. We have 3 Pentair MASTERTEMP 400 HD manuals available for free PDF download: Installation And User Manual, Brochure Pentair MASTERTEMP 400 HD Installation And. There are 3 screws to remove before lifting off the panel. 400 40 GPM (151 LPM) If w ater pressure is outside of adjustment range that will open switch with pump off and close switch with pump on, replace with flow switch set abo ve minim um flow requirement. Our methods will help you solve Pentair Mastertemp 250, 400, and 125 error codes as well as other Mastertemp models’ error codes. That isnt a build up on it but more of an erosion. Why Pentair Mastertemp 400 Wont Turn On. Your Pentair MasterTemp 400 temp sensor location is near the high-limit switch. Troubleshooting a high limit sensor error (HLS) on a Pentair …. Whether you are troubleshooting your heater for one specific problem, or simply looking to tune up your Pentair® MasterTemp® or Max-E-Therm®, this repair kit has what you need! This Kit Includes: (1) Stack Flue Sensor Replacement 42002-0024S (1) Thermistor Replacement 42001-0053S (1) Pressure Switch Replacement 3902. In most cases, the thermal governor that controls the cooling fans of the heater is the culprit. For that, clean out the gas orifice and burner system. Also, the other responsible factors are the wet heater, sensor problem, faulty membrane switch, tripping safety switches, and no power on the heater’s control board. Pentair MasterTemp 400 heating light flashing is caused when the heater is calling for heat but not igniting. Heat Your Pool Smarter. Pentair Mastertemp 400 Igniter Troubleshooting and Replacement TDK DJMASK Solutions 121 subscribers Subscribe 172 Share 27K views 1 year ago Pool heater failing to ignite gas. Error Code E06: Stack Flue Sensor Is Shorted 3. Your regulator is sensitive to water chemistry. Troubleshooting Pool Heater Thermal Regulator (Thermostat). Error Code R13: Startup Mode 4. Pentair pool heater troubleshooting: service heater light is on!. Whether you are troubleshooting your heater for one specific problem, or simply looking to tune up your Pentair® MasterTemp® or Max-E-Therm®, this repair kit has what you need! This Kit Includes: (1) Stack Flue Sensor Replacement 42002-0024S. Put the new one in and turn it to stabilize. The easiest way to troubleshoot is to attach one meter lead to the 24V ground in the system and trace the other 24V leg through the controls with the other meter lead. Pentair Mastertemp 400 issue Curious if anyone can help troubleshoot or diagnose issue with our pentair heater. Follow the Troubleshooting on page 44. Pentair Mastertemp 400 Displaying Wrong Temperature Pentair Mastertemp 400 wrong temperature seems to be the most. Ensure enough gas supply on the heater. Yours (in the picture), should be replaced either way. Tighten the thermistor with a ⅞” deep socket. Pentair Water Pool and Spa, Inc. We have 3 Pentair MASTERTEMP 400 HD manuals available for free PDF download: Installation And User Manual, Brochure Pentair MASTERTEMP 400 HD Installation And User Manual (68 pages) POOL AND SPA HEATER (FOR OUTDOOR USE ONLY) Brand: Pentair / Category: Heater / Size: 10. 24K subscribers Subscribe 35K views 1 year ago In this video I will show you what steps I. Pentair MasterTemp Operation & Installation Manual>Pentair MasterTemp Operation & Installation Manual. Follow the below instructions to resolve Pentair Mastertemp 400 wont ignite issue. For additional free copies of this manual; call (800) 831-7133. Troubleshooting Pool Heater Thermal Regulator (Thermostat) TDK DJMASK Solutions 123 subscribers 5. Issues with MasterTemp 400. Pentair Mastertemp 400 gas pool heater cycling due to a high limit sensor error. Curious if anyone can help troubleshoot or diagnose issue with our pentair heater. Temperature Problems 3. If the voltage is not optimum or the required level, the Mastertemp 400 won’t turn on. Test Conditions: Pump flow rate: 50gpm. The heater function might not be enabled for spa under the heater. Email Us Submit a Support Request Call Us Pentair Pool Support 1-800-831-7133 Find a Dealer Frequently Asked Questions Learn More Education Center Additional Resources Product Registration Rebate Center Software Downloads Warranty Center. Mastertemp 400 TroubleshootingI intended to clean the filter soon since it had been awhile, so early the next day I took it apart. Robzilla8233 165 subscribers Subscribe 121K views 6 years ago Trouble shooting a mastertemp that will not turn on when buttons are pressed. The heater function might not be enabled for spa under the heater. With operation, heater turns on, goes through light show, green spa or pool light is on, yellow heat light flashes, but after about 2-3 minutes red service heater light comes on. When the Pentair Mastertemp 400 is leaking water, it’s usually due to a faulty part in the heat exchanger. Step 1: Remove the heaters left side panel. The following instructions will guide you through Pentair MasterTemp 400 Ignition control module. 24K subscribers Subscribe 35K views 1 year ago In this video I will show you what steps I went through to. The pH level of the condensate is between 3. Pentair Master Temp 400 problems. Robzilla8233 165 subscribers Subscribe 121K views 6 years ago Trouble shooting a mastertemp that will not turn on when buttons are pressed. Operation & installation manual Pentair MasterTemp Operation & Installation Manual 120/240 vac natural gas/lp gas mastertemp pool & spa heater Also See for MasterTemp: Installation instructions manual (8 pages) , Brochure (4 pages) , Instructions (2 pages) 1 2 3 Table Of Contents 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28.