14 | Evolve 950 Operation Guide: 12472-A
Troubleshooting
Check the following information before making a service call as some performance
characteristics of the Evolve are a normal part of operation. If you are still unsure or
concerned after reading this section, please contact Rinnai.
During installation there will be an initial burning in period where some smoke and smell may
be experienced. This is a normal part of the operation.
The appliance is fitted with an overheat safety switch which will shut off the appliance. If the
appliance shuts off repeatedly servicing may be required.
Using the heater for the first time, or after a long period of non use
Ignition may not occur the first time it is operated due to air in the gas pipes. If ignition does
not occur the unit will switch off automatically. Try operating the heater again if this occurs.
The heater may make noises after ignition or switching off. This is due to the expansion and
contraction of the internal components—this is normal. The heater will not ignite if the On/
Off button is pressed straight after the heater has turned off. It will take approximately 20
seconds before the unit will switch on again.
Characteristic Explanation
When turning
on
Warm air does not start when the
burner lights.
The fan starts automatically after a short delay.
This is to allow the appliance to warm up,
helping avoid cold draughts.
Smoke or strange smells are
produced when first operating the
appliance after installation.
This is caused by grease, oil, or dust within the
appliance. This will stop after a short time.
Sharp clicking noises at ignition,
or when the unit thermostat
modulates to a lower or higher
setting, or shuts down.
This is expansion and contraction of the heat
exchanger and is a normal part of operation.
During
operation
Clunking noise when the
thermostat operates.
This is the sound of the gas valve opening and
closing to regulate the flow of gas.
When turning
off
Fan continues to run after the
heater is turned off.
This is to remove residual heat from within
the appliance. This stops once the unit cools
down.
Other Steam is discharged from the flue
terminal outside.
High efficiency appliances tend to discharge
water vapour on cold days—this is normal.
Heater doesn’t start when the
Standby/On button is pushed
(thermostat on high)
Check the appliance On/Off button is on.
Check timer(s). Timer programmes must
be turned off or overridden for manual
operation.
Timers Timer(s) do not operate at the set
time
They may be inactivated or incorrectly
programmed. Check timers are set correctly.
Timer operates for a short time
then cuts out
Room temperature may be higher than the
set temperature. Increase set temperature if
desired. Turn off the Extra Low button if on.
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