Heat Pump Water Heater
2
Water Pump .............................................................................................................................. 23
Circuit Board ............................................................................................................................. 23
WIRING CONNECTION DIAGRAM ................................................................................................. 25
TEMPERATURE TO RESISTANCE THERMISTOR CHART .............................................................. 26
Index of Figures
Figure 1- HPWH Service Parts ...................................................................................................... 4
Figure 2 – User Control ............................................................................................................... 11
Figure 3 – Operating Modes ......................................................................................................... 14
Figure 4 – Heating Element Electrical System ............................................................................. 15
Figure 5 – Energy Cut Off ............................................................................................................ 16
Figure 6 – Error Code LED.......................................................................................................... 16
Figure 7 - Capacitor ..................................................................................................................... 18
Figure 8 – Transformer ................................................................................................................ 18
Figure 9 – Thermistor Connections .............................................................................................. 19
Figure 10– Fan Motor and Water Pump Connections ................................................................. 19
Figure 11– Power Check .............................................................................................................. 20
Figure 12 - Relays ......................................................................................................................... 20
Figure 13 – ECO & Upper Thermistor......................................................................................... 21
Figure 14– Replace Capacitor or Relays ..................................................................................... 22
Figure 15 – Replace Fan Assembly .............................................................................................. 23
Figure 16– Replace Water Pump .................................................................................................. 23
Figure 17– Replace Circuit Board ............................................................................................... 24
Figure 18– Wiring Diagram ......................................................................................................... 25
Figure 19– Thermistor Resistance Chart ..................................................................................... 26
Before inspecting, diagnosing, repairing or operating
any water heater, be sure to examine all of the safety
and warning labels on the tank. Follow the instruction
on these warning labels. Read and understand the Use
and Care Manual that was shipped with the water
heater. Failure to do so can result in unsafe operation of
the water heater resulting in property damage, bodily
injury, or death. Should you have any problems reading
or following the instructions in the Use and Care
Manual, seek the help of a licensed and qualified professional.
Copyright 2009, Rheem Manufacturing Company, Water Heater Division.
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