10
Forced-Air Agricultural Construction Heater
Operating Instructions and Owner’s Manual
SYMPTOMS
CAUSE
SOLUTIONS
The heater does not start:
Lamp
is off
No power supply
• Check functioning and position of switch
• Check the mains
• Check power connections
• Check the fuse
The heater does not start:
Lamp is on
Switch (#9 FIG. 5) in wrong
position
Select correct position
Defective room thermostat
• Check that thermostat connection plug is inserted
• Check the electrical connections of the thermostat
• Check thermostat setting and correct it
• Check functioning of thermostat
Gas pressure switch tripped
due to no gas or insufficient
pressure
• Check that gas feed pipe has been bled
• Check gas feed pressure
The heater works erratically and the burner
goes on and off alternately:
Gas flow insufficient
• Check and clean gas filter.
• Clean and recalibrate the burner.
The heater does not work:
Lamp
flashes
Voltage control has tripped
due to insufficient electrical
supply (V < 95V)
• The heater restarts automatically when sufficient voltage is restored
(V>95V)
• Check the power line if the heater starts and stops several times
• Check the power line if the heater does not start and remains in safety
stop
The heater does not work:
Lamps
and
are on.
Manual reset safety thermo-
stat has tripped due to exces-
sive overheating of combus-
tion chamber
• Check that the fan motor starts correctly and is not obstructed
• Check that the fan motor is not burned out or that the motor condenser is
not broken
• Check burner calibration
The heater does not work:
Lamp
is steady on
LAUNCH THE SELF-DIAGNOSIS PROCEDURE
PUSH BUTTON (8) FOR 12 SECONDS AND RELEASE:
THE BUTTON LAMP FLASHES WITH 2 TO 7 FLASHES
Number of flashes of lamp (8)
2
No flame during ignition
cycle
• Check gas pressure at burner
• Check and clean gas filter
• Check that ionization probe is not discharging to ground
• Check ionization probe connection cables (they must not discharge to
ground)
3
Micro switch with blade
has tripped (electrical
contact remained open)
at start of ignition cycle
• Check wire connection of pressure switch
• Check pressure switch and replace if necessary
4
Parasite flame detected
in pre-wash phase dur-
ing ignition cycle
• Check that there is no remaining gas in the combustion chamber
• Check that ionization probe is not discharging to ground
• Check ionization probe connection cables (they must not discharge to
ground)
5
Micro switch with blade
has tripped (electrical
contact has opened)
during ignition cycle
• Check wire connection of pressure switch
• Check that burner motor and fan are not blocked or broken; replace if
necessary
• Check that smoke exhaust chimney is not partially or totally obstructed
• Check pressure switch and replace if necessary
TROUBLESHOOTING
