Pentair Mastertemp gas heaters are a compact High-efficiency gas pool and spa heater. They have a rounded tube bundle heat exchanger unlike any other on the market. We carry spare parts and service these regularly.
Models: Natural Gas or LPG
Mastertemp 125 - Output : ~29kW
Mastertemp 200 - Output : ~46kW
Mastertemp 300 - Output : ~69kW
Mastertemp 400 - Output : ~92kW
Fan-forced downward, column flame.
Noryl, multi-gasket, against mild-steel plate.
Copper / Cupro-nickel
Waterco Turbotemps were simply a re-branded Pentair Mastertemp. Waterco has moved on from these heaters. Waterco does not sell this version anymore.
Models: Turbotemp 125, 200, 300, 400
Another re-branded Pentair Mastertemp, this time with a different outside casing. The internals are identical. Sta-rite actually designed this style of heater before Pentair took over.
Models: Max-E-Therm 200, 300, 400
We carry almost all spare parts on-board, and are factory-trained. Spare parts can also be ordered and picked up from our shopfront at 10 Industry Blvd, Carrum Downs
They use a finely tuned fan-forced blower for efficiency.
Due to the efficiency of these heaters, there are some issues that can be of concern.
- They are prone to water chemistry issues. When the heat exchanger leaks from corrosion, it can fill the entire combustion chamber with water.
- The bolts on the water manifold are made of mild steel and can rust.
- Can be difficult to diagnose issues.
Pentair Mastertemp, Waterco Turbotemp, Sta-Rite Max-E-Therm Gas Heater Error Codes:
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.
Other Codes that may be seen:
AGS - Gas Shutoff. Temperature in heater is too high.
HLS - Hi Limit Switch Opened
PS - Pressure Switch Opened. Clean filters and ensure correct water flow.
AFS - Air Flow Switch Failure. Do no operate heater.
SFS - Stack Flue Sensor Error. Combustion may be incorrect.
E01 - Temp Sensor Failed. Water chemistry may be incorrect.
E02 - High Limit Sensor Failure. Ensure water flow is correct. If this reoccurs,
E03 - Thermal Fuse Failure. Temperature exceeded limits. Do not operate heater.
E04 - Fan Sensor Failure. Sensor error or blocked / sooted heat exchanger. May be bad gas supply or failed parts. Do not operate heater.
E05 - Stack Flue Sensor Failure. Sensor error or blocked / sooted heat exchanger. May be bad gas supply or failed parts. Do not operate heater.
Other Issues That Require Service:
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.
R13 / R8 - Part of Startup Sequence. Wait for next step. Not an error
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