Rheem RTGH-RH11DV - Chapter 4: Troubleshooting - Burner Safety; Er:43 Burner Limit Switch Abnormality

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Errorcode Meaning Condition
BurnerLimitSwitchabnormality
(Manualrestore)
BurnerLimitSwitch’stemperature
isabovetheacceptablerange,
errorcode43willappear.
Failureevent
StopalloftheoutputsexceptfanwhenBurnerLimitSwitchattachedonburnerupperplateshows
temperatureabove302℉(150℃).
Checkpoint
①Checkconditionsofburnerlimitswitchconnectedwith
burnerandcircuitboard,anddisconnection.
②
Checkconnectorandifnoproblem,measureburnerlimit
switchlocatedatburnerheadandreplaceoverheatingswitch
whenthemulti-metervalueshows'0L'.(Normalvalueis
'0~0.5Ω'.)(CN11:Red⑦,⑮)
Chapter4Troubleshooting
BurnerLimitSwitch(302℉/150℃)