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MaxxHome 20720 Manual

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4. MAINTENANCE
4.1. Therepairsormaintenanceoperationsmustonlybecarriedoutbyqualiedpersonnel.
4.2. Theunitmustbecheckedbyaqualiedtechnicianatleastonceayear.
4.3. Regularlychecktheconditionsofgashose,andgasregulatorifitmustbereplacedonlyuse
original spare parts.
4.4. Before starting any maintenance operation on the heater disconnect from both gas and
electrical suppliers.
4.5. If the unit has not been used for a long period we advise that a technician carries out a
general check up before using. It is important to control the following:
4.5.1. Periodically check the gas supply hose conditions and, should it be changed, use only
original spare parts.
4.5.2.Checkthestartingelectrodeposition(seeFig.5).
4.5.3. Check the connections of the safety thermostat and of the thermocouple: they must always
be clean.
If necessary clean the fan blade and the inside of the heater using compressed air.
5. TROUBLESHOOTING
Automatic ignition models
Automatic ignition models
PROBEM
CAUSES
The motor does not work No electricity supply Check the terminal board with a tester
The room thermostat is regulated too low Regulate the thermostat on a higher temperature
The safety thermostat is on Wait about one minute then push the RESET button
The motor works, but the
burner does not light up
and after fe
w seconds
the heater stops
The cylinder gas tap is closed Open the gas tap
The cylinder is empty Use a new cylinder
The nozzle is obstructed Remove the nozzle and clean it.
The solenoid gas valve is not open Check that the solenoid valve works
There is no spark Check the position of electrode
T
he burner lights up
but after few seconds the
heater stops
No connection with the earthing system Check and connect properly
Defective connect
ion between sensor and
safety device
Check and connect properly
Defective safety device Replace the safety device
T
he heater stops during
operation
Excessive gas supply Check the pressure reducer and if required replace it
Insufficient air flow Check that the motor works properly
Insufficient gas supply due to ice formation on
the cylinder
C
connected together.
7


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