Rinnai EX17C (RHFE-434FTA), EX22C (RHFE-559FTA) Fault Codes, Code Displayed, Remedy

Fault Codes

If there is a malfunction the appliance may shut down as a safety precaution and display a fault code to assist in diagnosing the problem. The fault code will flash in the display on the control panel. When making a service call, this code will assist with diagnosing the fault.

You may be able to clear the fault code by turning the heater off and then on again. If the fault code remains or returns on the next operation, contact Rinnai or your nearest service agent and arrange for a service call.

CODE DISPLAYED	FAULT	REMEDY
		Check that gas is turned ON.
11 [1]	Ignition Failure	Check that the vent termination is not blocked.
		Refer to the Restart Function explanation.
		Service call if repeated.
14	Overheat	Clean filter.
		Service call if repeated. [2]
16	Room Overheat	Ensure that room temperature is less than 104°F (40°C).
31	Room Temperature Sensor	Service call.
32	Faulty
33	Overheat Temperature	Service call.
34	Sensor Faulty
49	Sensor Breakdown	Service call.
53	Sparker Failure	Service call.
61	Combustion Fan Failure	Service call.
62	Convection Fan Failure	Service call.
70	Faulty ON/OFF Switch or	Service call.
	Faulty “Set back” Switch
71	Faulty Solenoids	Service call.
72	Faulty Flame Rod	Service call.
73	Communication Error	Service call.
99	Flue Block	Check around the flue terminal for blockage. [3]

[1]Only this code is dim.

[2]If the fusible link needs replacement, it must be done by a qualified service agency. In addition, the cause of the overheat needs to be determined. The fusible link is a one use safety device that breaks to shut off the appliance.

[3]Remove any obstructions. The flue needs to be kept clear to expel exhaust gases. If the appliance fails to operate contact a qualified service agency.

Rinnai Corporation EX17C / EX22C Manual 13