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1.4 TROUBLE SHOOTING
Rinnai products are all equipped with a self-diagnosis system: in case of failure, an error code appears on the control
panel display and fl ashes. This function can be very useful for diagnosing the problem and tracing the causes, avoiding,
where possible, the need for an external intervention by an authorized Rinnai technician. Write down the fl ashing error
code before making the maintenance request.
To cancel the error code and to restore the normal operation of the appliance, it is necessary to stop the hot water
withdrawal by closing all the taps for a few seconds. If this procedure does not solve your problem, press the ‘On/
Off ’ key to switch off the appliance, switch off the power supply for a few seconds and reset the unit. If the error code
remains, it is necessary to contact an authorized Rinnai technician.
It is possible display the last 9 error codes, followig the procedure below:
1.
Turn off the water heater by pressing the “On/Off ”” button.
2.
Press and hold the “On/Off ” for 2 seconds and then the
(Up)
button simultaneously.
3.
The last 9 maintenance codes display and fl ash one after other.
4.
To exit diagnostic codes and return the water heater to normal
operation, press and hold “On/Off ” button for 2 seconds and then
(Up) button simultaneously.
5.
Turn on the water heater by pressing the “On/Off ” button
Troubleshooting without controllers (Outdoor Models)
If the remote control has not been installed and the following faults occur, you can follow the advice below; contact an
authorized Rinnai service center if you do not solve the problem.
Description
Remedy
The unit does not attempt to start at all.
Check the power supply. Clean the water fi lter. Check the water
inlet on the appliance.
The unit starts then shuts down immediately.
Check the power supply. Check the gas cock. Open the hot
water faucets more.
The unit starts then the water goes cold.
Check the power supply.Open the hot water faucets more.
Faults caused by insuffi cient gas/water supply, insuffi cient quality of gas/water, installation
errors, improper use of the appliance or lack of maintenance are not covered by warranty.
CAUTION
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