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Model # 21V40T Official Rheem 40-gallon mobile home gas water heater
Here are the diagrams and repair parts for Official Rheem 21V40T 40-gallon mobile home gas water heater, as well as links to manuals and error code tables, if available.
Error CodesBy Schematic
SELECT DIAGRAM
Browse Parts for21V40T Water Heaters
- #7A
Thermostat and burner diagram
Orifice, burner (lp gas) (red)Part #AP-6234-B
The manufacturer no longer makes this part, and there's no substitute part
- #5
Thermostat and burner diagram
BurnerPart #AP-8980-B
The manufacturer no longer makes this part, and there's no substitute part
- #1
Thermostat and burner diagram
ThermostatPart #AP-9051-B
The manufacturer no longer makes this part, and there's no substitute part
- #5A
Thermostat and burner diagram
BurnerPart #AP-8980-C
The manufacturer no longer makes this part, and there's no substitute part
- #4
Thermostat and burner diagram
TubePart #AS-35137-D
The manufacturer no longer makes this part, and there's no substitute part
#NI
All parts diagram
Anode rodPart #N/P
The manufacturer no longer makes this part, and there's no substitute part
- #6
Thermostat and burner diagram
ThermocouplePart #AP-6379-E
The manufacturer no longer makes this part, and there's no substitute part
- #2
Thermostat and burner diagram
TubePart #AP-8964-C
The manufacturer no longer makes this part, and there's no substitute part
- #3
Thermostat and burner diagram
Burner, natural or lp gasPart #AP-29458A-B
The manufacturer no longer makes this part, and there's no substitute part
#NI
All parts diagram
Owner's manualPart #AP-10046
The manufacturer no longer makes this part, and there's no substitute part
Most common symptoms to help you fix your water heaters
Choose a symptom to see related water heater repairs.
Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu…
Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excess…
Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element,…
Main causes: water supply needs chlorine treatment, anode rod too reactive…
Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve asse…
Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating elemen…
Main causes: faulty pressure relief valve, water is overheating…
Effective articles & videos to help repair your water heaters
Use the advice and tips in these articles and videos to get the most out of your water heater.
Learn some of the most common symbols found in a wiring diagram and what they mean.…
Find out what’s wrong with your appliance by following a circuit.…
Read about some water heater repairs that you can easily do yourself.…
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