Rheem Gas Hot Water System Troubleshooting
Rheem continuous flow gas hot water systems come in a variety of sizes, and all feature a minimum six-star energy rating and a 10-year warranty on the heat exchanger. Rheem hot water heaters also boast unique features including the Q Factor to eliminate the fluctuations in available hot water that occurs with some continuous flow units, as well as a Flame Safe protection system to shut down the water heater before overheating can occur.
What maintenance can I do on my Rheem hot water system?
To ensure the safe operation of your Rheem Hot water system, please only conduct basic maintenance as specified for owners via the Rheem hot water owners guide. Here are a few Rheem specific troubleshooting hints tips to go through before calling the professionals.
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Common Rheem Gas Hot Water issues
Before you start, check the Error/fault code on the hot water unit itself. Modern Rheem Hot Water systems include a display panel for simple error checking, any error showing up here can be referenced in your user manual and either be fixed by the homeowner or be passed onto a plumber.
Rheem Gas Hot Water Error Codes
Consult your manual as these may change per product but for current Rheem hot water systems, the current error codes are as follows:
| Error Code | Fault Condition |
| 03 | Filter damage |
| 05 | Filter not cleared |
| 11 | Ignition Failure |
| 12 | Flame Failure |
| 14 | Thermo Switch Off (150⁰C) |
| Overheat Thermistor temp. too high | |
| 16 | Room temp. too high
(40⁰C 10 min) |
| 22 | Tip-Over switch operate |
| 31 | Room temp. thermistor abnormal |
| 33 | Overheat thermistor abnormal |
| 62 | Abnormal fan speed |
| 71 | Gas solenoid valves circuit abnormal |
| Gas proportional control valve circuit abnormal | |
| 72 | Detected false flame |
| Thermocouple circuit abnormal | |
| 73 | Functional trouble on gas type circuit |
Why do I have no hot water on my Rheem gas system?
Pilot Light
With any gas hot water system, it is incredibly common to have your pilot light extinguished for what seems like no reason at all. Things that can cause this to happen include wind, rain, flooding and sometimes animals. If you have mains gas check you haven't been disconnected from the gas network. I you are using LPG tanks to supply your gas, make sure they haven't run out or that the valse is off. To relight the pilot light check your Rheem system and/or manual which will have easy instructions on how to achieve this.
Leaking pressure relief valve
Most hot water systems include an overflow outlet valve often called a relief valve which will at times relieve pressure from the hot water tank. If you feel your Rheem gas hot water system is visibly leaking a lot more than the standard bit of pressure runoff, now is the time to call a licenced plumber.
My water is too hot, how do I turn it down?
If you feel your hot water is much hotter than it should be, you could try adjusting the thermostat on your Rheem hot water system downward. Make sure not to set lower than 60°C for health and safety reasons.If you still cannot get the temperature perfect, don't hesitate to call a plumber.
When all fails and If you are ever in doubt about your Rheem Gas Hot water system, Pure Plumbing can supply, install, repair, and service Rheem hot water heaters in and around the northern regions of Sydney, including the CBD and Eastern Beaches.
Ref - https://www.rheem.com.au/help/troubleshooting
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