Rinnai REU - 16 FUA - E user manual Error Messages

ERROR MESSAGES

Rinnai water heaters have the ability to check their own operation continuously. If a fault occurs, an error code will flash on the Digital Display if you have temperature controllers installed. This assists with diagnosing the fault, and may enable you to overcome a problem without a service call. Please quote the code displayed when enquiring about service. Some of these remedies can not be checked by the user because they require the front to be taken off of the unit. They are included so that you can give the information to the gas engineer.

Code	Fault	Remedy
Displayed
-	Noticeable reduction in water	Inlet water filter needs to be cleaned.
	flow
10	Not enough combustion air	Check for physical blockages around
		air intake or exhaust. Check combus-
		tion fan.
11	No Ignition / Gas supply	Check gas valves, gas supply and
		ignition unit.
12	Flame failure / Earth Leakage	Check gas valves and gas supply.
		Check flame rod.
		Check earth wire lead.
		Check remote control.
14	High flame safety device	Check overheat circuit
16	Over temperature warning	Modulating control valve problem or
		water flow control valve problem
32	Outgoing water temperature	Check Hot Water Thermistor and wire
	sensor faulty
34	Combustion Air temperature	Check Air Intake Thermistor and wire
	sensor faulty
52	Gas modulating valve faulty	Check gas modulating valve and pcb.
61	Combustion fan failure	Check Combustion Fan
71	Micro-processor failure or Sole-	Check solenoids and pcb.
	noid circuit failure
72	Flame rod circuit error	Check flame rod and pcb.

*In all cases, you may be able to clear the Error code by turning the hot water tap OFF, then ON again. If this does not clear the error, try pushing the On/Off button OFF then ON again. If the Error Code still remains contact Rinnai or your nearest service agent for advice.

**Faults caused by insufficient gas/water supply or gas/water quality and installation errors are not covered by the manufacturer’s warranty.

Regular maintenance should be performed by a competent person in accordance with the local regulations at least once annually.

16