Antti-Teollisuus Oy
21
408102 02-2020
Vacboost WM09
Dryer Heater
Symptoms
Possible cause
Remedy
3. Ignition fault
The burner motor starts, the control volt-
age supply from the control unit to the
ignition transformer has been switched
on. No ignition occurs, and after a short
while, a rapid shut-off takes place (symbol
1.)
Soiled or worn ignition points, damaged
insulation
Clean or replace
Point clearance too high
Adjust according to the instructions
Damaged ignition cord
Replace
Faulty ignition transformer
Replace
The burner motor starts, the control
voltage supply from the control unit to
the ignition transformer has not been
switched on. No ignition occurs, and after
a short while, a rapid shut-off takes place
(symbol 1.)
Faulty control unit
Replace
The supply plug of the ignition transform-
er has come loose or damaged
Connect or replace
4. No flame is formed
The burner motor starts, ignition spark is
formed, after a short while, a rapid shut-
off takes place (symbol 2.)
Gas valve does not open:
Clear up the reason for the break (see
Circuit diagram)
-break in the control circuit
Replace the damaged part
-faulty actuator
-damaged conductor
Faulty gas flow setting
Adjust
5. A break after the flame has formed
Flame is formed. A shut-off occurs (gas
pressure switch, min.), followed by a
restart – or when the burner steps up
to the 2nd stage – the operation stops
(gas pressure switch, min.), and a restart
follows.
Gas pressure too low:
-pressure regulator not operational
Repair or replace the regulator
Clogged filter
Clean the filter
Setting of the gas pressure switch (min.)
faulty
Adjust
