Ariston Type C - Servicing Instructions; Accessing Boiler Components

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1. Check the fan cable
2.
Replace the fan
3. Replace the main P.C.B.
1. Check/replace ignition
electrode
2. Check ignition cable
3. Check/replace the main P.C.B.
Replace
the main P
.C.B.
IS THE F
AN
RUNNING?
DOES CODE
A33 APPEAR?
ARE IGNITION
SPARKS GENERATED
REGULARLY?
DOES THE
AIR PRESSURE SWITCH
CLOSE? (E33)
YES
YES
YESYES
NONO
NONO
NONO
YESYES
YESYES
NONO
1. Check the power supply
of the gas valve.
2. Check for an air
pressure signal
3. Check the gas pressure
on the burner
4. Check the soft-light
adjustment
5. Replace the gas valve
6. Check/replace the
main P.C.B.
1. Table II
2. Press RESET
1. Table III
IS THE BURNER
ALIGHT?
BOILER HAS
SHUTDOWN?
YESYES
YESYES
NONO
WAS
THE FLOW TEST
SUCCESSFULL?
(A02 TEST FAILED)
YESYES
NONO
NONO
IS
THERE STILL
A PROBLEM?
NORMAL
OPERATION
NONO
YESYES
B
1. Check pump cable
2. Check/replace the pump
3. Check NTC probes cables
4. Check/replace NTC probes
5. Check/replace main P.C.B.
1. Check the exhaust flue duct
2. Check the APS cable
3. Check if there is condensate in the silicone pipes
4.
Check/Replace the APS
5. Check/Replace the main P.C.B.