Ideal Boilers Esprit 2, Руководство по установке и обслуживанию

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FAULT FINDING
F
AUL
T FINDING F
AUL
T FINDING F
AUL
T FINDING F
AUL
T FINDING F
AUL
T FINDING
ESPRIT 2 -
Installation and Servicing
90 H.....2..... (CONTROL THERMISTOR [RETURN] ERROR)
YES
Is there continuity between the
PCB and the thermistor ?
Remove the boiler return thermistor from the
CH return pipe.
Are the thermistor values correct ?
Replace the thermistor
NO
NO
YES
Replace PCB
Check and replace wiring as necessary
91 H.....3..... (DHW THERMISTOR ERROR)
YES
Is there continuity between the
PCB and the thermistor ?
Remove the boiler DHW thermistor from the plate
heat exchanger and disconnect thermistor wires.
Are the thermistor values correct ?
Replace the thermistor
NO
NO
YES
Replace PCB
Check and replace wiring as necessary
Check resistance using a suitable multimeter
connected across the thermistor’s terminal pins
At 25
o
C expect 9,700 - 10,300 Ohms
At 60
o
C expect 2,400 - 2,600 Ohms
At 85
o
C expect 1,000 - 1,100 Ohms
Check resistance using a suitable multimeter
connected across the thermistor’s terminal pins
At 25
o
C expect 9,700 - 10,300 Ohms
At 60
o
C expect 2,400 - 2,600 Ohms
At 85
o
C expect 1,000 - 1,100 Ohms
206091-1.pmd 26/05/2010, 16:09 62