Pentair Mastertemp 125 Troubleshooting
Most Common Pentair Mastertemp 125 Reported Problems
Technical Malfunction Issues
Power and Charging Issues
Performance Issues
Setup and Usage Issues
Customer Support Issues
Other Issues
Pentair Mastertemp 125 Pool Heater Not Working?
If you're experiencing issues with your Pentair Mastertemp 125 pool equipment, you're not alone. Many users have faced similar challenges and have shared their experiences to help others troubleshoot and resolve these problems.
I have my boiler set @ 83 degrees and it shuts down at 77in service mode
Issue Category:
Technical Malfunctions
Ownership Length:
N/A
I can’t raise the temperature. It shows pool and spa temp. but when I push the up button nothing happens.
Issue Category:
Technical Malfunctions
Ownership Length:
N/A
Pentair Mastertemp 400HD: connected to a pool only, starts up just fine, runs for a few minutes sometimes to about 10 minutes to even 25 minutes then Heater shuts off, goes into spa on (No spa connected) and the control panel displays a temperature reading of 215 F then starts to decline. I have no error codes, or lights on the back of the control panel. If I turn the pool on again, same thing, it will run then shut off minutes later. I have replaced the Stack flue sensor, the Thermistor, Thermal regulator, High Limit Switch and the Automatic Gas Shut off. I used a meter to check the conductivity of all electrical connections, all good. Since it fires up, the control panel is working, heat is set to 84 and displays water temperature heating from 76-80, it runs for a few cycles so I am steering away from ignition issues and thinking Gas Valve. Any thoughts??
Submit Your Own IssueI have had error codes and had parts replaced. After turning on the heater, in the first 5 minutes or less it shuts off and says service heater. I have noticed since it was installed 2 years ago, it doesnt seem to have as much exhaust pressure coming out. There don’t seem to be anything blocking the exhaust either. Help anyone?
Submit Your Own IssueI can’t find a water drain plug for winterizing my heater.
Submit Your Own IssueLoud popping sound when heating.
Submit Your Own IssueHigh pitched whistle that stops when you take a side panel off, when hehating.