Pressure Switch - Whirlpool CHW9050 Service Manual

Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
See page 4-11 for the procedure to access
the pressure switch.
To check the pressure switch at the
component terminals, perform the following
steps.
1. Unplug washer or disconnect power.
2. Disconnect the wire connector and hose
from the pressure switch.
3. Set the ohmmeter to the R X 1 scale.
4. Touch ohm meter leads to terminals 21 &
22, continuity will be read without water in
the washer. As water enters the washer
the next switch to close is Suds Level
and continuity is read between terminals
11 & 14. The next switch to close is the
Wash Level read at terminals 21 & 24.
Finally if water were to rise high enough,
the Overflow Switch would close between
terminals 21 & 26.
Electrical Shock Hazard

PRESSURE SWITCH

To check the pressure switch at the CCU,
perform the following steps with no water in
the washer.
1. Unplug washer or disconnect power.
2. Disconnect pressure switch connector PR6
3. Set the ohmmeter to the R X 1 scale.
4. Touch the ohmmeter test leads to connector
5-2
Hose Inlet
from the CCU (See page 4-9).
pins 4 and 6. The meter should indicate
continuity (0Ω).
Water level setting
Less than 1 liter
Suds Level > 3.6 liters
Wash Level > 5.4 liters
Overflow, about 54 liters
Test points
Pins 4 and 6
Pins 1 and 2
Pins 4 and 5
Pins 3 and 4