TM017 Rheem Air Sourced Heat Pump Service Instructions REV: C
Date of Issue: 5/11/05
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Component Tests 13 -15
Test 13
Ensure power is isolated before conducting this test
Boost Mode
Using a multimeter set on the x1
resistance scale, measure
between terminal 2 and terminal 3
of the terminal strip.
Normal resistance should be less
than 1 ohm when the evaporator
temperature is below –3.5ºC
degrees.
Test 14
Ensure power is isolated before conducting this test
Heat Pump Mode
Using a multimeter set on the x1
resistance scale, measure
between terminal 2 and the
orange wire on the evaporator
thermostat.
Normal resistance should be less
than 1 ohm when the evaporator
temperature is above 10 degrees
Test 15
Ensure power is isolated before conducting this test
Using a multimeter on the x1
resistance scale, measure
between terminals 3L and 4L on
the thermostat.
The reading should be less than 1
ohm.