Malfunction indicated by flashing code
Error description
LED timer
Operation light
(flashes each
second)
EEPROM error, indoor unit
OFF
1
Communication error between indoor unit and outdoor unit
OFF
2
Fan motor speed control not OK
OFF
4
Room temperature probe defective
OFF
5
Evaporator probe defective
OFF
6
EC error - no cooling/heat output after 30 minutes
OFF
7
Condensation pump float switch triggered (optional)
OFF
8
Current consumption is too high
ON
1
Outdoor unit air inlet temperature probe faulty
ON
2
Outdoor unit condenser temperature probe faulty
ON
3
Outdoor unit hot gas line condenser temperature probe faulty
ON
4
EEPROM error, outdoor unit
ON
5
Condenser fan outdoor unit speed control not OK
ON
6
Inverter fault outdoor unit
FLASHES
1
Overvoltage/undervoltage, outdoor unit
FLASHES
2
Heat gas temperature outdoor unit too high
FLASHES
3
Outside temperature too low
FLASHES
4
Compressor outdoor unit control defective
FLASHES
5
Mode conflict
FLASHES
6
REMKO MXT
32
Summary of Contents for MXT 263
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