Indoor Unit Fault Analysis - REMKO ML 263 DC Assembly And Operating Instructions Manual

Fault indicated on indoor unit
Display Cause
E0 EEPROM error
Communication fault between outdoor unit and
E1
indoor unit
E2 Wiring fault L/N/Pe/S
E3 Defective speed monitoring, evaporator fan
Evaporator inlet temperature probe defective /
E4
short-circuited
Evaporator suction pipe probe defective /
E5
short-circuited
EC Refrigerant loss / leak
Outside temperature probe defective / short-
F1
circuited
F2 Condenser probe defective / short-circuited
F3 Heat gas line probe defective / short-circuited
F4 EEPROM fault, outdoor unit
F5 Defective speed monitoring, condenser fan
P0 IPM power board safety shutdown
P1 Overvoltage/undervoltage protection
P4 Inverter board fault
11.2

Indoor unit fault analysis

Fault E0: EEPROM error
Switch the unit off for 5 seconds. Is the fault still
shown on the display?
YES
Is the EEPROM chip properly seated on the cir-
cuit board?
YES
Replace the indoor unit circuit board.
Required action
Contact specialist dealer
Disconnect from mains for 2 min, check elec-
trical wiring
Check wiring, replace IT circuit board
Check wiring, check motor voltage
Check wiring, contact specialist company
Check wiring, contact specialist company
Check refrigerant pressure, check system for
leaks
Check wiring, contact specialist company
Check wiring, contact specialist company
Check wiring, contact specialist company
Contact specialist dealer
Check wiring, check motor voltage
Check wiring, switch off and on again, contact
specialist company
Check voltage on the L/N/S system. Switch
system off and on again
Switch system off and on again, replace
inverter board
NO
Insert the chip properly.
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