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PCU 90
14 Fault rectification plan
Fault
Cause
Appliance does not
Power connection
show any function
incorrect
Main switch off
Safety device has trig-
gered
Main switch defective
Main switch on, time
Power board defective
circuit does not show
any function
Connection cable from
the power board to
control board has been
released
Time circuit functioning
Flap not closed
Program cannot be
Flap switch defective
started
Objects become too
Ventilator fan defective
warm
30
Remedy
Check power connec-
tion
Switch main switch on
Switch safety device on
Exchange main switch
Exchange power board
Connection cable must
be inserted properly
Close flap
Exchange flap switch
Exchange ventilator fan
Fault
Cause
Parts are sticky
Gas bottle empty
Pressure regulator is
closed
Flap seals defective
Operating pressure on
pressure regulator is
no longer at 5 bar
Regulating needle
valve was set differently
Regulating needle
valve defective
Relay board defective
Magnetic valve
defective
Operating flap is not
Program must be
locked
started beforehand
Flap is not closed
centrally and properly
Electromagnets are
defective
Relay board defective
Remedy
Exchange gas bottle
Open pressure regula-
tor
Renew flap seals
Set pressure regulator
correctly to 5 bar
Set regulating needle
valve correctly
Exchange regulating
needle valve
Exchange relay board
Exchange magnetic
valve
Start program
Close correctly with
both handles
Exchange electromag-
nets
Exchange relay board
31
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