American Water Heater HPE10280H045DV Benutzerhandbuch

26

THERMAL PROTECTOR

AUX. MAIN

COMPR.
MOTOR

RUN CAPACITOR

C

S

R

Figure 17

If the compressor is not operating or is not operating 
correctly, the run capacitor may be the cause and 
should be checked. 

A bad capacitor will typically be either shorted or open. 
Visually inspect the body of the capacitor; look for any 
sign of the housing bulging, splitting or leaking fl uid. 
Replace the capacitor if there is any sign of physical 
damage. Use a capacitance meter to measure the 
capacitance of the capacitor. If it measures 25uF 
±5%, it is good. If the value is outside this tolerance, 
the capacitor is bad and should be replaced. If a 
capacitance meter is not available, use an Ohm 
meter to check the condition of the capacitor. Place 
one meter lead on each of the capacitor terminals. If 
the resistance value is increasing or decreasing, this 
indicates it is charging or discharging and that the 
capacitor is probably good. If the resistance is infi nite, 
it shows  the capacitor is open or the resistance is 
steady, that the capacitor is partly shorted. In either 
case, the run capacitor should be replaced with a unit 
with the same specifi cations and dimensions.

Figure 16

Capacitor 
Terminals