Innotherm UCCA-36HDC, Installation Instructions Manual

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07
OUTDOOR UNIT DISCHARGE
GAS PIPE TEMPERATURE
SENSOR FAILURE
A. Connection location on outdoor unit main PCB
is:
CN15 PO\PG\PQ
for 12kbtu/18kbtu/
24kbtu/36kbtu, PO is for outdoor ambient
temperature sensor, PG is for outdoor fan coil
temperature sensor, PQ is for outdoor unit discharge
gas temperature sensor. Replace with new sensor; B.
after step A, if unit still displays error code E07,
change the outdoor unit main PCB.
E08 SINGAL COMMUNICATION
BETWEEN INDOOR AND WIRE
CONTROLLER FAILURE
A. Check the wiring between indoor unit and
wire controller; B. If not work, change wire controller
OR wire between wire controller and indoor unit PCB;
C. if not work, change indoor unit PCB.
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09 SINGAL COMMUNICATION
BETWEEN INDOOR AND
OUTDOOR UNIT FAILURE
A. Check the wiring sequence between indoor unit
and outdoor unit, if wired incorrect this will cause
damage to the PCB for both indoor unit and outdoor
unit; B. Check the status of LED4 lamp on outdoor
unit main PCB, if it’s dark or flashing, check the
wiring on outdoor unit main PCB, if wiring is
correct, change the outdoor unit main PCB; C. if
LED4 lamp is lit, change indoor unit PCB; D. If step
C does not work, change outdoor unit main PCB.
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10 DISCHARGE GAS TEMPERATURE
OR COMPRESSOR
TEMPERATURE OVERHEAT
PROTECTION
Check that the refrigerant charge is correct, if
refrigerant charge is low test system for leaks.
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12 INVERTER MODULAR BOARD
FAILURE
A. Check the voltage of input AC power is correct;
B. Check the wiring on outdoor unit main PCB is
correct, or loose; C. If step A & B are passed but
unit is still not functional, change the inverter
modular board; D. if step C does not work, then
change the outdoor unit main PCB.