Specifications

FM774/0708 BOOK 2 34
MOBILE FAULT FINDING (M 240)
FAN FAULTS
FAULT Ref CAUSE ACTION
1. FAN NOT OPERATING
Select ‘FAN’ and fault find
as follows
1.1 No mains supply to control board. Check mains fuse, circuit breaker or
isolation switch.
1.2 Control board failure. If no power out voltage to motor re-
place board.
1.3 Motor not powered. Check continuity through 6-pin plug -
motor.
1.4 Capacitor failure - motor will buzz but
not rotate.
Replace capacitor.
1.5 Motor failure or shutdown due to in-
ternal (motor) thermal protection
(thermal overload).
Check run current, if running at more
than 120% of value on motor name
plate - replace motor
1.6 Motor seized. Replace motor.
1.7 Fan jammed in cowling. Centralise fan in cowling.
2. FAN SPEED WILL NOT
VARY
2.1 Control board failure. Confirm voltage between supply neu-
tral and brown motor wire 130-240V
if present replace motor.
WATER FAULTS
FAULT Ref CAUSE ACTION
3. WATER NOT ENTERING
UNIT
3.1 Mains isolator tap closed. Open tap.
3.2 Fluidmaster diaphragm jammed. Replace diaphragm.
4. WATER CONTINUALLY
RUNNING FROM UNIT
4.1 Water level set too high. Adjust float valve setting.
4.2 Float Valve or diaphragm failed. Replace float valve or diaphragm.
5. WATER NOT
CIRCULATING
Select ‘COOL’ and fault find
as follows
5.1 Pump failure. Confirm 240v present at pump termi-
nals - replace pump.
5.2 Pump strainer basket clogged. Remove and clean strainer basket.
5.3 Water distribution manifold blocked. Remove and clean manifold.