Rheem 325 II Series Service Instructions Manual page 34

Fault Finding: Chart 4
4
Element Mode and/or
Insufficient Hot Water
Is the green LED displaying
1 long flash?
NO
Is the red LED displaying
a Fault Code?
NO
Isolate and restore power to the
heater. Is the red LED now
displaying a Fault Code?
NO
Has the heat pump module mains
cable been unplugged and an
Element Plug left plugged into the
cable?
NO
5
TM077: 325 & 410 Series II Heat Pump Service Instructions
Rev 00: Issued April 2014
This document is stored and maintained electronically by
Is the ambient air temperature
YES less than 4°C or
greater than 45°C?
Is the evaporator sensor working?
Reset the heat pump using the
reset button, and use the proxy
sensor or draw off water to initiate
The evaporator
a call for heating.
fan exhausts air
out the front of
Does the evaporator fan come on
the heat pump.
at the same time as the
compressor, and run in the
correct direction at full speed?
Is the airflow obstructed?
YES
NO
NO
TEST 1
YES
YES
YES
NO
YES
YES
YES
Service. All printed copies are deemed uncontrolled.
Element Mode – Ambient is utilised if
the ambient temperature is outside the
heat pump‟s operating limits.
Normal Operation
Replace the evaporator sensor.
Reference 12
12
NO can be found
on Chart 11.1
Remove the obstruction.
1.Clean the evaporator coil.
2. Ensure the air path around the heat
pump is clear and the heat pump is
not installed in an enclosed room.
11
Isolate power, remove the Element
Plug and recommence full diagnosis
from the
General Fault Diagnosis Chart.
34