Atlantic Boilers A-YO Series Руководство по эксплуатации и техническому обслуживанию - Страница 12
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Fault Finding
ERROR
LCD controller – no display
LCD lights up – button F no go
Feed water pump not operating
at low water boiler conditions
Pump rotating, no water flow
Feed water full, pump continues
Heat Contactor operates
reduced or no output
Water level sensor failure
POSSIBLE FAULT
Fuse failure
Low voltage
Wire(s) loose
LCD faulty
High or low voltage
Button F faulty
Pump seized
No LCD message
Fuse burnt out
Wiring loose
Pump burnt out
Air in the pump
Check valve blocked
Water pump jammed
Water pump impeller worn
Scale on high level water probe
HL probe connection loose
Water level control not correct
Circuit breaker not operating
Circuit breaker has failed
AC contactor has failed
Heating tube has failed
Power circuit has failed
Build-up of scale on sensor
Sensor wire is faulty
Sensor housing is scaled up
LIKELY REPAIR
Change fuse
Check voltage
Check circuits
Replace LCD
Check voltage
Replace LCD
Press '+' to rotate pump
Replace LCD
Replace fuse
Check connections
Replace pump
Release the air
Clean check valve
Switch off boiler/open
housing/release jamming
Replace pump
Check the HL water probe
& clean if possible
Check the HL probe circuit
Check the HL/LL control levels
Open the circuit breaker
Replace the circuit breaker
Replace the AC contactor
Replace the heating tube
Fit new power wiring
Clean or replace sensor
Check the circuit
Clean the housing