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Pentair Mastertemp / Waterco Turbotemp Gas Heater REPAIRS AND Services

Pentair Mastertemp


Pentair Mastertemp pool heaters were popular for a few years by many pool builders. As they are complex and not many people know how to work on these, many builders have moved on to other brands. We see more blown heat exchangers on these than any other heater.  

Models: Mastertemp 125 HD, 200 HD, 300 HD, 400 HD

Waterco Turbotemp


Waterco Turbotemps were simply a re-branded Pentair Mastertemp. Waterco has moved on from these heaters. Waterco now recommends a different brand of heater.
Models: Turbotemp 125, 200, 300, 400

Sta-Rite Max-E-Therm


Yet another re-branded Pentair Mastertemp, this time with a different outside casing. The internals are identical.
Models: Max-E-Therm 200, 300, 400

About Pentair Heaters


We carry almost all spare parts on-board, and were an Authorized Service Agent.   We only supply these heaters where space is a requirement, and handle all Warranties directly. We do not recommend Pentair Heaters for most installations.

More Information


They use a finely tuned fan-forced blower for efficiency. Unfortunately they succumb to any problem with water flow and gas supply pressure. Their Heat Exchangers appear to be more prone to issues with water chemistry. 

Pentair / Waterco / Sta-Rite Troubleshooting

Pentair Mastertemp Error Codes & Troubleshooting

Loud, high-pitched whine - Flame is too rich.

Flame is “fluttery.” Flame is too lean. Exhaust may have acrid smell or burner may fail

to stay lit.

Burner pulsates or Exhaust vent is too long. Reduce length of exhaust vent and/or surges, especially on number of elbows.

Boiling in heat exchanger - Low water flow to heater, pump and or filter. May be accompanied by water “bumping” sounds. Do not use heater.

E05 / E06 - Sensor error or blocked / sooted heat exchanger. May be bad gas supply or failed parts. Do not operate heater.

R13 / R8 - Part of Startup Sequence.

Service System LED On - Heater not detecting water pressure. Make sure valves in correct position, filters clean, and sufficient water flow through heater.

Service Heater LED On - Cycle Mains power off, then on. Try again. If fault reoccurs, see below.

Smoke or Steam coming from heater. Switch heater off, and gas valve off. Do not use heater.

Frozen Screen - Heater may have restarted too many times. May be gas supply issue.

If any of the above continue, please Contact us for Service - 03 5932 5970