Rheem 310 Series Service Instructions Manual page 27

Fault Finding – Chart 3.3
3.3
Test 10
Is 240V
present at the
circulator?
YES
Test 11
Is the
circulator motor
resistance
correct?
Component Tests 10 & 11
Warning – 'Live' equipment wear
Personal Protective Equipment
when conducting this test.
Using a multimeter on the AC voltage
scale, measure between the circulator
plug terminals at the control board.
Normal voltage is 240 volts.
Note: As the control board controls the
speed of the circulator by pulsing the
electrical supply to the circulator an
analogue multimeter
between 180 – 240V.
TM025 Rheem Heat Pump Service Instructions REV: B
Date of Issue: 02/08/07
This document is stored and maintained electronically by
System in boost or limp mode - Software version HPV 3.1, HPV 3.2 or no HPV
circulator plug firmly
NO
plugged into correct
Test 10
may indicate
identification
Is the
socket?
YES
NO
Warning
isolated before conducting this
test.
Unplug the circulator connection plug from
the control board and using a multimeter on
the ohms scale, measure between the two
circulator connection plug terminals.
A reading of approximately 75.3 ohms
should be obtained.
26
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled".
Ensure circulator is firmly plugged
into correct socket on control
NO board and that plug pins on
control board are clean and free
from conformal coating.
YES Replace control board
Check circulator impellor for
restriction or siezure.
Replace circulator
Test 11
- Ensure power is