Friedrich MW12Y1F - Manual (Page 10)

Operation LED (red) Timer LED (green)
0.5 sec / twice Serial (reverse) error after operation
0.5 sec / three times Serial (reverse) error during operation
0.5 sec / four times Serial (forward) error after operation
0.5 sec / five times Serial (forward) error during operation
Room temp. thermistor error
open / short Indoor unit
Thermistor Heat exchange (middle) thermistor error
open / short
Heat exchange thermistor error
open Outdoor unit
Thermistor Outdoor temp. thermistor error
open / short
Opposite VDD permanent stop protection
(Electric aircleaner, circuit error)
Outdoor unit PCB 0.5 sec / five times 0.5 sec / six times 1b Outdoor unit fan control error
0.5 sec / twice Lock
0.5 sec / three times r.p.m abnormal
Power supply No Indication Power supply abnormal
Model distinction 11 Model distinction error
Indoor unit fan motor
0.1 sec flashing on all LED
0.1 sec flashing on red and orange LED
Indoor unit PCB
0.5 sec / six times
0.5 sec / four times 0.5 sec / eight times
0.5 sec / three times
0.5 sec / four times
0.5 sec / three times
0A
21
12
Communication
0.5 sec / twice
0.5 sec / twice
0.5 sec / three times
Off
02
04
Indication on wired
remote controller
06
Indication on LED
Contents Kind of error
01
E R R O R C O N T E N T S
9 2006.03.13