Rheem RTGH-RH11DV - Chapter 4: Troubleshooting - Exhaust Temperature; Er:94 Exhaust Temperature Exceeds Limit

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Errorcode Meaning Condition
Exhausttemperatureexceeds
selectedcuto󰘯temperature.
(Manualrestore)
OverheatingExhaustThermistor
(Thewaterheatershutsdown
whentheexhausttemperature
exceeds149°F(65°C).)
Failureevent
Itoccurswhenexhaustgasemissionisfaultyduetoexhaust󰘱ueblockage.
Whenexcessiveamountofgasin󰘱owsduetohighersetofdipswitchthanitshotwaterheatercapacity,
exhaustgastemperaturewillincreasemorethanexcesstemperature.Exhaustgastemperaturemaybe
highduetoheatexchanger'smalfunction.
Checkpoint
③Checkforanyobstructionsintheventpipe.
①Turno󰘯thewaterheaterforatleast30minutes,andthenrestartit.
②CheckExhaustThermistor’swiringconnectedatexhaust
ductisdisconnected.Andcheckcircuitboardssocket.
(CN7:White⑤,Blue⑫)
Chapter4Troubleshooting
Fire
199,000Btu
(LP)
180,000Btu
(LP)
199,000Btu
(NG)
180,000Btu
(NG)
High
Fire
Low
Fire
Normal
Fire