57
FAULT FINDING
FAULT FINDING FAULT FINDING FAULT FINDING FAULT FINDING FAULT FINDING
Ideal Logic Code Combi - Installation and Servicing
87
ALTERNATING ‘F’ AND ‘5’ - RETURN THERMISTOR FAULT
Check the resistance using a suitable multimeter
At 25
o
o
o
C expect 1,000 - 1,100 Ohms
NO
88
ALTERNATING ‘F’ AND ‘6’ - OUTSIDE SENSOR FAULT
Check the resistance using a suitable multimeter
At 0
o
C expect 31,000 - 35,000 Ohms
At 15
o
At 30
o
Is the wiring securely connected between the
incoming terminal block boiler connection of the
NO
Is the wiring securely connected at both the boiler and
NO
89
ALTERNATING ‘F’ AND ‘0’ - NO WATER FLOW THERMISTOR FAULT
Check the resistance using a suitable multimeter connected
At 25
o
o
o
C expect 1,000 - 1,100 Ohms
Is the wiring securely connected to the low voltage 11 way
NO
Is the wiring securely connected to the No Water Flow
NO
NO
NO
Check and replace wiring as necessary
NO
206279-1.indd 57 06/01/2011 09:10:50
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