Mds Diagnosis - McQuay MWM Service Manual

MCQUAY Service Guide Book

7.3 MDS Diagnosis

(A)Indoor Units
Model
A(5)WMD 09/10/15/20/25 G
A(5)CKD 20/25/30/40/50 A
A(5)CKD 10/15/20 C
A(5)CMD 20/25/28 E
A(5)CMD 40/50 D
A(5)CMD 62 C
A(5)CCD 10/15/20/25/30/40/50/60 C
A(5)DBD 80/100
Error Diagnosis by Indoor Unit LED Indicator
ITEM
TYPE
1 Indoor Sensor Error
2 Indoor Pump Error
3 Communication Error
4 Outdoor Sensor Error
5 Compressor Overload
6 Pressure Switch Trip
7 Pressure Sensor Error
8 System Failure
9 Others
● OFF
Error Diagnosis by Wired Controller (MC301)
ITEM CODE DESCRIPTION
1 System malfunction
E0
2 Sensor Broken (TH1 discharge Temp.)
E1
3 Sensor Broken (TH2 inlet coil 1#)
E2
4 Sensor Broken (TH3 mid coil 1#)
E3
5 Sensor Broken (TH4 inlet coil 2#)
E4
6 Sensor Broken (TH5 mid coil 2#)
E5
7 Sensor Broken (TH6 inlet coil 3#)
E6
8 Sensor Broken (TH7 mid coil 3#)
E7
9 Sensor Broken (TH8 ambient temp)
E8
10 Sensor Broken (TH9 outlet coil)
E9
11 Sensor Broken (TH10 subcool outlet)
EA
12 Sensor Broken (TH11 subcool suction)
EB
13 Sensor Broken (TH12 suction)
EC
14 Emergency Run
EF
15 Outdoor Storage Malfunction
F0
16 Sensor Broken (indoor inlet coil)
F1
17 Sensor Broken (indoor mid coil)
F2
COOL / HEAT
(Green / Red)
●
●
●
○ ON
Board Handset
MC201-C G17
MC201-C G17
MC201-C G17
MC201-C G17
MC201-C G17
MC201-C G17
MC201-C MC301
MC201-A MC301
SLEEP / FAN
(Red / Orange)
●
●
●
●
○
BLINK
72
TIMER / DRY
(Orange)
●
●
●
○
○
Diagnosis