Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 1077

(ii) Parts layout on the outdoor unit PCB
15
13
~
12
11
7
6
8
10
9
5
4
ZNR
CNA1
+
VR1
−
200V
CT − +
∼
DS217V
PCB power supply connector
(Primary side)
• Replacement procedure of indoor unit microcomputer printed circuit board
Microcomputer printed circuit board can replaced with following procedure.
1) Confirm the parts numbers. (Refer to the following parts layout drawing for the location of pats number.)
Model
FDCP2001, 2501HKXRE2
Inverter frequency monitor
LED
3
LED
4
LED
5
Operation
frequency 0~35 35~45
18 19 20
16 17
~
~
~ ~
+
+
+
+
+
IC2 +
IGø
8V1 2
− ICI
øGI
+
+
3
4
CNA2
PCB power supply connector
(Secondary side)
45~55 55~65 65~75
Operation output
23
CNH 2
12V
5V
S OUT Failare
GND
External input
+
Outdoor unit
number address
setting switch
SW1 SW2
(SW: Order of 1)
Outdoor unit
number address
Test
setting switch
Forced
SW Heat Cool
(SW: Order of 10)
Trial
Snowing
Defrosting
Reset
Checker
J3
J2
J1
+
Thermistor
Serial
Parts No.
PCB505A012L
75~85 85~95 95~100
FDC-HKXR
• Function of DIP switch
Reference
Name Function
page
Check LED
ON
reset
SW
3-1
Normal
OFF
operation
Easy to start
ON
defrosting
SW 1037
3-2
Normal
OFF
operation
Measure
ON against
snow
SW 1039
3-3
Normal
OFF
operation
Reference
Name Function
Trial
ON
operation
SW 1042
3-4
Regular
OFF
operation
Cooling
ON
trail operation
SW 1042
3-5
Heating
OFF
trail operation
Compulsory
ON
operation
SW
3-6
Regulat
OFF
operation
Test mode
ON
SW
3-7
Regular
OFF
operation
• Function of jumper wires
Model J1 J2 J3
FDCP2001 With With None
FDCP2501 With With None
Note (1) "None" means that jumper wire
is not provided on the PCB or
the connection is cut.
Notes (1) mark: Flashing
mark: Stays OFF
(2) Relation between LED
3~5
and operation frequency
• LED ......40Hz
3
• LED ......20Hz
4
• LED ......10Hz
5
• Operation frequency =
Frequency indicated by
LED + 25
3~5
1075
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