Rheem 310 Series Service Instructions Manual page 25

Fault Finding - Chart 3
3
YES
Test 4
Is the
sensor strip
working?
YES
YES
Ensure water in heat
pump is below 60ºC &
reset heat pump. To
reset heat pump switch
off, wait for 30 seconds
then switch back on.
3.8
Note: The compressor
starts 30 seconds after
Does
the circulator.
compressor
successfully start
after delay?
YES
Let heat pump
run for ten
minutes or until
red LED flashes.
Red LED will flash if
system enters boost
Does
red LED
flash?
Note: Refer to page 5 for T sensor plug socket location on control board.
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
Red solid or Red and Green LED's
indicating simultaneously
Green flashing
What is the
status of the
Green solid
control boards
LED's?
No LED Indication
Red flashing
fan, sensor strip & T
sensors all firmly plugged
Test 5
Are all
T sensors
working?
Red solid or flashing / Red and Green
indicating simultaneously / Green solid
LED
Status
Red - flashing
after 5
seconds
Green - flashing
Does
compressor try
NO
to start after
delay?
YES
mode.
YES
NO
identification
Are the
relay, circulator,
into the correct
sockets?
NO
NO
circulator
operating?
YES
Has
compressor
recently been
operating?
Compressor internal OTC
Switch off power to heat
YES
3.5
24
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled".
Replace control board.
System working. Check operation.
Ensure plugs are firmly plugged
into correct sockets on control
NO board and that plug pins on
control board are clean and free
from conformal coating.
Replace sensor strip.
Replace faulty T sensor(s).
Replace control board.
3.2
Is
NO
Circulator operation can be
checked by feeling circulator
brass body for vibration.
NO
NO
may have opened.
pump, wait for ten
minutes then switch
power back on.
System working. Ambient air
temperature may have been too high or
low for normal operation. Heat pump
may have been too hot after operating
for an extended period due to large
volumes and/or frequent water usage.
3.1
3.3
3.4
8.3