Rheem RUUD Iraining, Manual

Page: 23 / 29

Heat Pump Water Heater
22
C a p a c i t o r
1. Turn off power to the water heater.
2. Using a flat blade and insulated screwdriver ground either the red or purple terminal to
the water heater to discharge any residual power in the capacitor.
3. Using a flat blade screwdriver or ¼ inch nut driver, remove the two screws holding the
capacitor strap.
4. Disconnect the wire leads one at a time and attach to new capacitor.
5. Secure replacement capacitor in place
with the two screws and strap.
6. Return power to the water heater and
check for safe operation.
R e l a y s
1. Turn off power to the water heater.
2. Using a flat blade screwdriver or ¼ inch
nut driver, remove the two screws
holding the relay.
3. Disconnect the wire leads one at a time
and attach to new relay.
4. Secure replacement relay in place with
the two screws
5. Return power to the water heater and
check for safe operation.
Figure 14– Replace Capacitor or Relays
T r a n s f o r m e r
1. Turn off power to the water heater.
2. Using a flat blade screwdriver or ¼ inch nut driver, remove the two screws holding the
transformer.
3. Disconnect the wire leads one side at a time and attach to new transformer.
4. Secure replacement transformer in place with the two screws
5. Return power to the water heater and check for safe operation.
T h e r m i s t o r s ( a m b i e n t , s u c t i o n , d i s c h a r g e , w a t e r o u t , e v a p o r a t o r ,
u p p e r t a n k a n d l o w e r t a n k )
Turn off power to the HPWH. Replacing a thermistor amounts to following the wiring harness
from the control board to the thermistors location. This is the easiest way to locate the thermistor.
When found, remove the clamping bracket and thermistor. Replace with the new thermistor and
route the Molex connector back to the control board. Restore power and check for safe operation.