Rheem 55027500 Service Instructions Manual page 33

Component Tests 13 -15
Ensure power is isolated before conducting this test
Ensure power is isolated before conducting this test
Ensure power is isolated before conducting this test
TM017 Rheem Air Sourced Heat Pump Service Instructions REV: C
Date of Issue: 5/11/05
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Test 13
Using a multimeter set on the x1
resistance
between terminal 2 and terminal 3
of the terminal strip.
Normal resistance should be less
than 1 ohm when the evaporator
temperature
degrees.
Test 14
Using a multimeter set on the x1
resistance
between
orange wire on the evaporator
thermostat.
Normal resistance should be less
than 1 ohm when the evaporator
temperature is above 10 degrees
Test 15
Using a multimeter on the x1
resistance
between terminals 3L and 4L on
the thermostat.
The reading should be less than 1
ohm.
32
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled".
Boost Mode
scale, measure
is below
Heat Pump Mode
scale, measure
terminal 2 and
scale, measure
–3.5ºC
the