Error code P7: Excessive temperature evaporator heating mode
Is the temperature at the evaporator of an
indoor unit higher than 63°C for over 50 sec-
onds?
NO
Replace probe T2
YES
Is the heat exchanger of the indoor unit heavily
soiled?
YES
Carefully clean the register
NO
Are the fan motors working?
NO
(See
YES
Is the refrigerant piping kinked?
YES
Suction refrigerant back off, replace pipe, per-
form pressure test and evacuate, put back into
operation
NO
Is too much refrigerant in the cooling cycle?
YES
Suction off refrigerant and refill system
NO
Wait until the temperature at probe T2 is below
50°C and the 3 minute compressor disabled
time has elapsed
Error code P8: Fan protection against excessive speed
The fan blade turns too quickly and generates high voltage on the board
Weather-related increase in the fan speed
Installation of the outdoor unit favours high air
flow rate
Implement wind protection measures
Implement wind protection measures and
change the installation site if necessary
REMKO MVV...DC
58
Summary of Contents for MVV 1200 Dc
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