Refrigerant System Fault Finding - Chart 1.3 - Rheem 55027500 Service Instructions Manual

Refrigerant System Fault Finding - Chart 1.3

1.3
Fit pressure gauges
to high side of
refrigerant system
Test 7
Is the
head pressure
excessive?
Allow time for the system
to equalize
Did
the system
equalize?
NO
Locate blockage in refrigerant
system and repair
Component Test 7
Warning – "Live" equipment Personal Protective Equipment should be worn
when conducting this test.
TM017 Rheem Air Sourced Heat Pump Service Instructions REV: C
Date of Issue: 5/11/05
This document is stored and maintained electronically by
Is the
NO compressor
siezed?
Is the
system taking
YES
too long to
equalize?
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled".
NO
YES
YES
NO
Fit gauges to the high side access valve and
observe the discharge pressure. Nominal
pressure should be as per the table below.
The average water temperature in the tank can
be determined by adding the water temperature
at the hot water outlet and the surface
temperature of the cylinder at the thermostat
and dividing the result by 2 i.e. 65+45=110
110/2 = 55.
See also pressure ratio / current table on page
20
Tank Average Water
Temp ºC
30
40
45
50
55
60
19
Replace the overload
Replace the compressor
Possible restriction in system
Locate and repair
Possible system overcharge
Evacuate and recharge
TX Valve metering incorrectly
Adjust or replace TX valve
1.4
550275
551275
2.2
Indicative Discharge
Pressure Range (kPa)
1450 - 1550
1650 - 1750
1850 - 1950
2050 - 2150
2250 - 2350
2450 - 2550