Specifications

TM022 Raypak RHP 33 Pool and Spa Heat Pump Service Instructions REV C
D.O.I: 14/03/2006
17
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Fault Finding Chart 1.2
1.2
Pool Heater not operating
NO
YES
Is
the high
pressure switch
closed?
Is there
24V AC present
at control board
terminal E10?
NO
YES
Is
the low
pressure switch
closed?
NO
YES
Replace 2A
fuse cartridge
NO
YES
Repair wiring between
terminal block and transformer
YES
NO
Is there
240 VAC present at the
transformer primary
windings?
Is there
24 VAC present at the
transformer secondary
windings?
Test 5
Test 6
Replace transformer
Has
the low voltage
fuse blown?
YES
6
Test 7
Test 8
Test 9
Repair or replace wiring
between low pressure switch
and control board.
Is there
24V AC present
at control board
terminal E6?
1.3
1.4
YES
NO
Test 10 Test 11
Did
the fuse blow
again?
Check heater operation
and advise customer
24V control circuit components
will need to be checked
individually. See the table on
“Specifications”
NO
YES
NO