8 Troubleshooting – Possible faults
169
F010
Comb. chamber
temp open cir-
cuit
•
Sensor is faulty
•
Open circuit in sensor cable
•
Sensor incorrectly or not con-
nected
•
Connect sensor
•
Replace cable
•
Check terminal (check plug
for secure fit)
•
Exchange the faulty sensor
(plug on the I/O circuit board)
with a different sensor
•
If a different fault appears, the
sensor should be replaced
•
If the same fault appears, the
I/O circuit board should be
replaced
F011
Flue temperature
sensor open cir-
cuit
•
Sensor is faulty
•
Open circuit in sensor cable
•
Sensor incorrectly or not con-
nected
•
Connect sensor
•
Replace cable
•
Check terminal (check plug
for secure fit)
•
Exchange the faulty sensor
(plug on the I/O circuit board)
with a different sensor
•
If a different fault appears, the
sensor should be replaced
•
If the same fault appears, the
I/O circuit board should be
replaced
F012
Boiler supply
temp.
short circuit
•
Short circuit in the sensor or
sensor cable
•
Connect sensor
•
Replace cable
•
Check terminal (check plug
for secure fit)
•
Exchange the faulty sensor
(plug on the I/O circuit board)
with a different sensor
•
If a different fault appears, the
sensor should be replaced
•
If the same fault appears, the
I/O circuit board should be
replaced
F013
Boiler supply
temp.
open circuit
•
Sensor is faulty
•
Open circuit in sensor cable
•
Sensor not connected
•
Connect sensor
•
Replace cable
•
Check terminal (check plug
for secure fit)
•
Exchange the faulty sensor
(plug on the I/O circuit board)
with a different sensor
•
If a different fault appears, the
sensor should be replaced
•
If the same fault appears, the
I/O circuit board should be
replaced
No.
Fault
Cause
Remedy
Table 8/1 - Faults
Summary of Contents for Compact 25
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