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Error code: E3/F5
Reason: If the fan speed of the indoor unit/outdoor unit falls below 300 rpm, the unit switches off
and the display shows error code E3 or F5
Cause:
n Electrical connection faulty
n Evaporator fan wheel defective
n Evaporator fan motor defective
n Control board faulty
Switch off voltage, switch on again 2
minutes later
. Is the error still
present?
NO
The unit operates normally.
YES
De-energise the unit and attempt to
turn the fan wheel by hand. Does it
rotate freely?
NO
Check the motor and the fan
wheel bearing, and replace the
defective parts.
YES
Check the electrical connections.
Are these correctly implemented?
NO
Correctly establish the electrical
connection
YES
Measure the voltage at the corre-
sponding connector plug on the con-
trol board (see section
Ä
‘Proce-
dure’ on page 49). Does the
measured voltage lie within the toler-
ance range?
NO
Replace the control board.
YES
Replace the fan motor. Is the error
rectified?
NO
REMKO ML series
48
48


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