SRK20ZGX-S, 25ZGX-S, 35ZGX-S, 50ZGX-S TECHNICAL ... - BVT
SRK20ZGX-S, 25ZGX-S, 35ZGX-S, 50ZGX-S TECHNICAL ... - BVT
SRK20ZGX-S, 25ZGX-S, 35ZGX-S, 50ZGX-S TECHNICAL ... - BVT
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◆ Check point of outdoor unit (50 type)<br />
CAUTION - HIGH VOLTAGE<br />
High voltage is produced in the control box. DonÕt touch<br />
electrical parts in the control box for 5 minutes after the<br />
unit is stopped.<br />
Color symbol<br />
BK<br />
BR<br />
RD<br />
GR<br />
BL<br />
OR<br />
WH<br />
Y/GN<br />
Black<br />
Brown<br />
Red<br />
Green<br />
Blue<br />
Orange<br />
White<br />
Yellow/Green<br />
F(250V 15A)<br />
AC.L GR GR<br />
L-1<br />
N-1<br />
AC.N<br />
BL BL<br />
CNO.1<br />
G3<br />
P_1<br />
PWB3 (CAPACITOR)<br />
CNG<br />
AC.L<br />
AC.N<br />
N_1<br />
RD BK<br />
DC-P DC-N<br />
PWB1 (MAIN )<br />
CNT CNB<br />
P_1 N_1<br />
RD<br />
BK<br />
CND<br />
PWB2 (POWER )<br />
CNG<br />
CNG<br />
CNJ<br />
CNH<br />
CNH<br />
AF_L2<br />
AF_L1<br />
CNI<br />
OR<br />
OR<br />
RD<br />
WH<br />
U<br />
V<br />
W BK<br />
OR<br />
OR<br />
RD<br />
WH<br />
BK<br />
L<br />
CM<br />
- 48 -<br />
1<br />
2<br />
3<br />
BK<br />
WH<br />
RD<br />
Y/GN<br />
FMo<br />
20S<br />
Th4 Th5 Th6<br />
◆ Inspection of resistance value of sensor<br />
Remove the connector and check the resistance value.<br />
See the section of sensor characteristics on page 41.<br />
EEV<br />
◆ Inspection of electronic expansion valve<br />
To test if there is voltage.<br />
(Voltage is only applied to the electronic expansion valve when the valve opening<br />
is being changed.)<br />
Red to White<br />
Red to Orange Normal if there is approximately DC 5 V 10 seconds<br />
Brown to Yellow after the power asupply is turned on.<br />
Brown to Blue<br />
If the expansion valve does not operate as shown above, it is defective.<br />
◆ Inspection of input to PCB<br />
¡ Check the voltage between terminals<br />
1~2 on the terminal block.<br />
(It is normal if AC 220/230/240V<br />
is detected.)<br />
◆ Inspection of serial signal<br />
Check the voltage between terminals<br />
2~3on the terminal block.(It is normal<br />
if the needle swing in the range of DC<br />
0~Approx.12V)
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