4.1.5 SELF-CHECK OF CONTROL SYSTEM
The Display/Control PCB has the self-check function. Press and hold the “
LIGHT
” and “
DOWN
”
keys at the same time for 5 seconds, the indicator light will flash once to confirm the input and the
unit will activate the self-check program. Below symptoms can be seen, otherwise replace the
PCBs:
LED indicators will be ON one by one.
LED light will be ON.
Temperature reader LED will display from 00 to 99.
Fan motor, compressor and heater will be ON.
After the self-check program has been finished the unit will automatically go into the normal
operation program.
4.1.6 TEST MODE
Press and hold the “
LIGHT
” and “
UP
” (the controls of upper zone for dual zone models & the
controls of lower zone for three zone models) keys at the same time for 5 seconds with power
ON, the indicator light will flash twice to confirm the input and the unit will run in the TEST MODE.
The compressor and all fan motors will operate continuously & independent from the SET
temperature. At the same time the display shows the icon “
--
". The TEST Mode will automatically
exit after 30 minutes or you can stop the TEST mode by disconnect the unit from power source.
4.2 SCHEMATIC DIAGRAM
4.2.1 For single zone models
BK
BK
TCJ-S1(XH)
TCJ-POWER(S)(XH)
RED
WH
M
RED
WH
M
t
BK
BK
BK
RED
F0
LAMP
F1H/N.A
RT1
RED
BK
BL
L
E
N
YE/GN
BN(BK)
BL(WH)
COMPRESSOR
YE/GN
OLP
STARTER
YE/GN
BL
BN
HEATER1/N.A
M
RED
WH
F1C
DOOR SWITCH/N.A
