20
REMKO VRS EN Series
The supply air fan does not
start
Move the "Ventilate" selector
switch to the "II" position.
The supply air fan should now
start!
If not:
■
Check the customer-provided
mains power supply
■
Check the fan and drive can
move freely
■
Check the fan drive V-belt
■
Check the electrical cables on
the fan motor for damage
■
Check the fan to see if it was
overloaded and the motor
thermal cut-out tripped
■
Check the operating capacitor
of the fan of the 230 V version
CAUTION
Repair work on the electrical
installation and on the burner
must be performed exclusively
by authorised specialists for
safety reasons.
CAUTION
Adjustment and maintenance
work on the unit and forced-
air burner may only be
carried out by authorised and
qualified technicians!
NOTE
If all of the functional checks
have been carried out without
any findings, please contact an
authorised service station.
Possible causes of malfunction:
■
The units were not able to cool
down because the electrical
connection was interrupted.
Even a brief interruption of
the power supply can cause
the STB to trip
■
Too high an outlet temperature
due to incorrectly implemented
air ducting or air louvre settings
■
The fan was overloaded and
the motor thermal cut-out has
tripped
■
The V-belt for the fan drive is
loose or defective
■
The air inlet or air outlet is not
free
■
Check the temperature
controller (TR) for function and
correct setting
■
Check the temperature
monitors (TW1/TW2) for
function and correct setting.
TW1 should be set at least 10K
below the setting value of TW2.
Otherwise, the unit may only
operate in partial load mode.