Trouble Display (primary)

Detailed Trouble Display (by Test Button)

Error

Operation

Timer

Error

Operation

Timer

Outdoor unit

0.5sec

1 sec

Current trip

0.1sec

0.5sec

control error

5 times

blinking

 

blinking

2 times

 

 

 

CT abnormal

0.1sec

0.5sec

 

 

 

 

blinking

3 times

 

 

 

Compressor rotation

0.1sec

0.5 sec

 

 

 

error

blinking

5 times

 

 

 

Outdoor unit fan drive

0.1sec

0.5sec

 

 

 

system abnormal

blinking

6 times

Indoor fan

0.5sec

0.1sec

Abnormal lock

0.1sec

0.5sec

motor error

6 times

blinking

 

blinking

2 times

 

 

 

Abnormal rotation

0.1sec

0.5sec

 

 

 

 

blinking

3 times

Refrigerant

0.5sec

0.1sec

Discharge temperature

0.1sec

0.5sec

cycle error

7 times

blinking

abnormal

blinking

2 times

 

 

 

Cooling high pressure

0.1sec

0.5sec

 

 

 

abnormal rise

blinking

3 times

Optional

0.5sec

0.1sec

Active filter voltage

0.1sec

0.5sec

function

8 times

blinking

abnormal (3rd time)

blinking

2 times

error

 

 

 

 

 

 

 

 

Active filter foltage

0.1sec

0.5sec

 

 

 

abnormal (1st time)

blinking

3 times

 

 

 

 

 

 

Outdoor Outdoor Outdoor Outdoor Indoor Indoor Outdoor Outdoor Outdoor Outdoor

Detailed Error Item

Current trip error is 2nd time within start up

>>Permanent stop

Current detection value is 0A for more than 1 sec when compressor is operated at more than 56rps

>>Automatic release after 3 min. ST

Compressor location detection error (incl. failed start up) for 3 times

>>Permanent stop

When outdoor fan abnormal fan motor duty abnormal operated 5 times

>>Permanent stop

Detected rotation is 0 r.p.m. at start up or at 56 secs after Fan mode is selected

>>Permanent stop

Detected rotation is 1/3 of target r.p.m. at start up or at 56 secs after Fan mode is selected

>>Permanent stop

Discharge Temperature protection (Discharge temperature is 110degC) operated 2 times

>>Permanent stop

High pressure rise protection (Outdoor heat exchanger temperature is 65degC) operated

>>Comp. OFF (releases after 3min.ST) Error is indicated while 3 min.ST

Active Filter voltage error operated 3 times

>>Permanent stop

Active Filter Module error or open detection protection operated

>>Automatic release after 3 min. ST

2006.02.20

11

Page 12
Image 12
Friedrich MW18Y3F, MR18Y3F specifications Active Filter voltage error operated 3 times Permanent stop