Technical data

23
ALPHA700
FAULT POSSIBLE CAUSE REMEDY
Boiler/Burner does Power supply turned off. Refer to section 26.
not operate.
External controls turned off. Refer to section 26.
Boiler already hot or Allow boiler to cool
control thermostats set or re-set control
too low. thermostats to higher
setting.
Overheat lamp System water not Investigate/check
illuminated and circulating. pumps and reset
boiler non-operational limit thermostat.
Control thermostats Replace thermostats
defective/out of and reset limit
calibration. thermostat.
Limit thermostat Replace limit
defective/out of thermostat.
calibration.
Burner locks out. Fuel supply turned off. Investigate - turn on
fuel supply.
Defect in burner or Refer to burner
burner maladjusted. manufacturers
instructions.
Burner very noisy/ Burner maladjustment. Check and adjust burner.
flame unstable.
Problem with flue. Investigate and rectify flue
anomaly.
28.0 fault
finding