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
Содержание MXD202
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