HC 0020
-
HC
0057
HC 2020
-
HC
2057
SERVICE MANUAL
2.
Suggestion regarding
fault signal "lack of water
humidification system"
(Concerning HG 0/2 only). Should this signal continue although
the supply tank holds sufficient water (at least half full) and the pump
trouble has been corrected ace. to operating instructions, the solenoid
valve 11-Y54 might be responsible for the malfunction; the reason
being that dirt particles on the valve seat impede proper closing of the val-
ve.
Consequently, the pump takes in air and the water circulation can't be
started.
To remove dirt, dismantle solenoid valve and clean the valve seat.
Then start humidification system again.
J r
)
21-F54
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