REMKO MXD 202 - Manual (Page 38)

Fault indication by flashing code
LED
OPERA-
TION
(green)
LED
TIMER
(orange)
LED
DEF/
FAN
(red)
LED
ALARM
(red)
OU Dis-
play
Cause Required action
on on
Normal operation, no
faults: heating mode
-
on
Normal operation, no
faults: cooling-, recircu-
lating air or automatic
mode
-
on
Normal operation, no
faults: On timer pro-
grammed
-
on on
Normal operation, no
faults: Off timer pro-
grammed
-
flashes -
Probe recirculating air
defective/actuated
Check resistance on
sensor
flashes -
Probe vaporizer defec-
tive/actuated
Check resistance on
sensor
flashes E7
Communication error
between PCBs OU & IU
Check electrical connec-
tion leads
flashes flashes E0 EEPROM error Check EEPROM
flashes on -
Shutdown inverter
module
-
flashes -
Liquid level switch con-
densate pump defective/
actuated
Contact specialist dealer
flashes on E4
Probe outdoor tempera-
ture OU actuated
Check resistance and
temperature on sensor
flashes on on E5
Surge voltage on outdoor
unit
Check power supply
flashes on P0
Overtemperature com-
pressor
Allow to cool compressor
flashes on on -
Mode conflict:
Set unit with fault display
on refrigerators and
other appliances to
heating mode
Priority heating: program
all unitss on cooling
mode / de-energize
flashes flashes flashes P3
Power consumption on
OU too high
Check power consump-
tion
For further fault diagnosis and troubleshooting s. corresponding user manual outer part.
REMKO MXD
38