Antti-Teollisuus Oy
22
408102 02-2020
Vacboost WM09
Dryer Heater
Symptoms
Possible cause
Remedy
6. Malfunction caused by the flame detection (=rapid shut-off)
The burner motor starts, flame is formed,
then a rapid shut-off takes place (symbol
1.)
Faulty position of the flame detector
Correct the position
Soiled flame detector
Clean
Too vague flame (light)
Check the settings of the burner
Faulty flame detector
Replace
Faulty control unit
Replace
Rapid shut-off during pre-ventilation (■)
Faulty flame detector
Replace
Faulty control unit
Replace
Rapid shut-off during stopping phase (◄) Faulty or outdated flame detector
Replace
Faulty control unit
Replace
7. Rapid shut-off during stopping phase
The flame does not go out
Gas valves are leaking
Replace
8. Burner head
Flame baffle has burned
Replace flame baffle as required
Distance between the nozzle and the
flame baffle wrong
Readjust
Faulty combustion air setting
Adjust
Insufficient air supply into the heater room
Increase the air supply
Output on 1st stage too low
Adjust
Increase the gas flow
Too low flow rate of combustion air:
-faulty adjustment ring position
Adjust
9. Malfunction of leak tester
Burner does not start.
See point “Leak tester” in the burner
manual
Red signal light is illuminated
Leak tester is faulty
Replace
Gas valve is leaking
Replace
