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Error code: E1
Reason: The indoor unit does not receive a signal from the outdoor unit within 110 seconds. The
check is performed 4 times in a row
, then error E1 is displayed.
Cause:
n Electrical connection not configured correctly
n Control boards outdoor unit or indoor unit defective
Switch off voltage, switch on again 2 minutes
later
. Is the error still present?
YES
Measure the voltage between the “S” and “N”
terminals of the outdoor unit. Does the valve
fluctuate between -25 V and 25 V?
NO
Check electrical connections in the indoor unit.
Are they OK?
YES
YES
Check electrical connections in the outdoor
unit. Are they OK?
Replace the control boards of the indoor unit. Is
the error rectified?
YES
NO
Is the transformer OK?
Replace the control boards of the outdoor unit
NO
Replace the transformer
YES
Replace the control boards of the outdoor unit.
Is the error rectified?
NO
Replace the control boards of the indoor unit
Fig. 52: Transformer measurement
Check the transformer (must not be connected to a
condenser) with a multimeter
. The normal value is
approx. 0 Ohm. If the value deviates, replace the
transformer.
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