Munters MIR TOR Mode D'emploi page 5

Heaters equipped with heated nozzle do not start im-
mediately or may stop for some seconds after start.
This is normal and should not be considered a faulty
4.2. Reset after lockout and Reset of safety thermostat
• The heater is equipped with a Reset pushbutton. When the
heater locks out, the red lamp on the pushbutton (fig. 1 n°2)
lights up. In this case push the Reset button (see also the par.
"Troubleshooting") to restart the heater.
• The heater is also equipped with a manual reset safety ther-
mostat fixed to the combustion chamber, that can be rea-
ched through the inspection cover. To reset the thermostat:
unplug the heater, open the inspection cover and push the
reset button on the thermostat body.
4.3. Shut down.
• Set switch to "OFF" to shut the flame off. The fan will go on
rotating for about 1'45'' to cool the heater down. The fan
motor will automatically stop at the end of the aftercooling
time, then the unit can be disconnected from mains.
6. TROUBLESHOOTING
TROUBLE
Heater does not start
Heater starts, flame ignites
but then heater locks out
Heater starts, flame does
not ignite and then heater
locks out
Heater starts, but combu-
stion is not good
Heater stops due to safety
thermostat
2
WARNING!
condition.
CAUSE
No power
Faulty cable/connections
Burnt fuse
Room thermostat set too low
Thermostat socket cap not inserted
The safety thermostat has been activated
Dirty or faulty flame sensor
Faulty burner control unit
Clogged nozzle
Flame sensor receives an external light
signal during ignition sequence
Faulty burner control unit
No fuel
Ignition fault, dirty or incorrectly
spaced electrodes
Dirty or blocked nozzle
Clogged filters
Leakes in fuel circuit
Oil pump provides low pressure
Insufficient combustion air
Insufficient ventilation air
The appliance has overheated
Faulty safety thermostat
Never disconnect the supply plug to stop the heater
while in operation
The big amount of heat produced could damage the
components or activate the safety thermostat and
therefore make the unit not function
5. MAINTENANCE
• Before carrying out any maintenance operation, disconnect
the power plug.
• Maintenance must be carried out by qualified personnel (see
also par. 7)
• The appliance must be thoroughly cleaned once a year to
ensure good combustion and long life.
• Clean periodically
the oil spraying nozzle and its filter;
the oil pump filter
the main fuel filter cartridge
the ignition electrodes
the fan blades
the inside of the appliance, using compressed air
the flame sensor with a mild detergent
• Periodically check cables and electrical connections
• Check the oil filter and replace if necessary.
SOLUTION
Check main distribution board and power supply line
Check/have cable replaced by a
qualified electrician
Check and replace if required
Set room thermostat on a higher temperature
Insert cap into the thermostat socket
Reset the safety thermostat
Clean or replace
Contact service personnel
Clean or replace
Check for external lights (sun, lamps, etc.)
Contact service personnel
Fill tank
Clean electrodes, contact service personnel if
required
Clean or replace
Clean or replace
Check and eventually replace
Contact service personnel
Pulire la fotocellula e, se questo non basta,
rivolgersi a personale specializzato
Wrong air lock setting
Contact service personnel
Contact service personnel
GB