Rinnai 19
Ducted Gas Heater OM
11. Error Codes
Customers may safely rectify the following faults by stepping through the corrective actions listed. If a fault persists,
contact Customer Care.
Error code 40, 41, 42 and 43
These errors indicate that an overheat condition has occurred. The fan will operate at maximum speed.
Corrective actions:
• Check there are sufficient outlets open on the duct system.
• Check that the floor/ceiling register and baffle is fully open and not restricting air movement.
• Check the return air filter (if fitted) is sized correctly, is clean and no obstructions have occurred (or been placed
in front of) the return air grille.
Error code 46, 47 and 55
These errors indicate that the heater has failed to ignite within the specified time.
Error code 50
This error indicates that the heater has locked out after four ignition attempts. This error can be cleared by using the
reset button to restart the heater, however, the unless the condition has been rectified, the error is likely to occur
again.
Corrective actions:
• Check the gas supply is turned on at the meter, and at the appliance gas cock.
• Check if other gas appliances are operating such as Gas Cooker and Hot Water Service (if installed).
• Check the gas cylinders have gas, and the cylinder valve is open (LPG only).
• Check that there is gas supply to the home. Contact the gas provider to confirm this. There may be works in the
area or a problem with the supply.
• The heater may require a general service.
Error Code 53
This error indicates the heater has locked out due to multiple overheat occurrences.
The primary cause is typically associated with insufficient airflow.
Corrective actions:
• Check there are sufficient outlets open on the duct system.
• Check that the floor/ceiling register and baffle is fully open and not restricting air movement.
• Check the return air filter (if fitted) is sized correctly, is clean and no obstructions have occurred (or been placed
in front of) the return air grille.
• Reset the appliance and if error 53 persist contact your installer.
Error code 56
This error indicates that a lockout has occurred on the pressure switch, usually caused by too much restriction on
the flue pipe, or condensate drain (SP6 models).
Corrective actions:
• Check the flue pipe for blockages
• Check the condensate piping for blockages (SP6 models).
Note:
Any other error codes that appear on the screen could indicate that the heater is not operating due to a malfunction or fault with
the electronic control module. This error may be reset at the power supply, however, if the error persists, contact Customer Care.
