551275 Power Supply Fault Finding - Chart 7 - Rheem 55027500 Service Instructions Manual

551275 Power Supply Fault Finding - Chart 7

7
Warning: Terminals may be 'live'.
Personal Protective Equipment
Is 240
volts present at
the terminal
block?
NO
Is
the heater
connected to an
off peak
tariff?
NO
Is
the isolating switch
turned off?
NO
Is the
fuse blown at the
switchboard?
YES
Reset circuit breaker
or rewire fuse
Did
the fuse or
circuit breaker blow
again?
NO
TM017 Rheem Air Sourced Heat Pump Service Instructions REV: C
Date of Issue: 5/11/05
This document is stored and maintained electronically by
should be worn
YES
Test 1
YES
YES
NO
Is
the evaporator
thermostat in heat pump
mode?
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled".
Is the
evaporator
thermostat in boost
mode?
Test 13
YES
Off peak connection is unsuitable for Heat
Pump models. Connect to continuous tariff or
Restore power and advise customer
Fault in household electrical wiring
YES
Booster circuit may
have electrical fault
Test 14
1. Faulty circuit breaker or fatigued fuse wire
YES 2. Unit may be short cycling due to faulty
thermostat
31
1.1
NO
8
'off peak 2' if available
6
NO