38MHRC: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
30
PCB DIAGRAMS (COOLING ONLY)
A210593
Fig. 35 —Sizes 12K (115V) and 18K (208/230V)
Table 13 — LED Codes
No. Name CN# Meaning
1
CN1A
CN3 Earth: connect to Ground
CN1 N_in: connect to N-line (208-230V AC input)
CN2 L_in: connect to L-line (208-230V AC input)
CN16 S: connect to indoor unit communication
2HEAT1CN17 Connect to compressor heater, 208-230V AC when is ON
34-WAYCN60 Connect to 4 way valve, 208-230V AC when is ON.
4HEAT2CN15 Connect to chassis heater, 208-230V AC when is ON
5AC-FANCN25 Connect to AC fan
6PMVCN31 Connect to Electric Expansion Valve
7 TESTPORT CN6 Used for testing
8 TP T4 T3 CN21/CN22 Connect to pipe temp. sensor T3, ambient temp. sensor T4, exhaust temp. sensor TP
9 DC-FAN CN7 Connect to DC fan
10 FAN_IPM IPM 501 IPM for DC fan
11 W CN28 Connect to compressor
V CN29 0V AC (standby)
U CN30 10-200V AC (running)
12 COMP_IPM IPM 301 IPM for compressor
To Next Page
Loading...
