Fujitsu AOY90 User Manual

ERROR
CONTENTS
ERROR CAUSE
REMEDY
ERROR
CODE
Discharge
temperature 1
error
1. Check for leak and check additional
refrigerant amount and recharge
suitable refrigerant.
1. Gas leak or refrigerant level
low.
1. Generation condition.
Discharge temperature 1
remains 130 C or greater for
40 minutes and compressor
1 stopped 2 times or more.
2. Corresponding operation.
Error display to outdoor unit
LED and error output to
communication bus line.
3. Reset condition.
When all the following
conditions are satisfied:
1) Discharge temperature
protector 1 reset.
2) Discharge temperature
protector not operated for 40
minutes or longer.
21
2. Check outdoor fan motor operation.
Remove wind path obstruction. If fan
motor faulty, replace motor.
3. Check for loose or dislodged discharge
temperature sensor THD1 wiring and
check THD1 resistance. If abnormal,
replace sensor.
4. Check operation and coil resistance of
following electronic expansion valve. If
abnormal, replace electronic
expansion valve.
Coil resistance measurement points.
Red-white, red-orange, brown-yellow,
brown-blue.
(1) Outdoor unit electronic expansion
valve EEV1 and EEV2 Coil resistance:
192 +/-19 ohms.
(2) Indoor units electronic expansion valve
EEV Coil resistance: 150 +/-50 ohms.
5. Check operation of following solenoid
valves. If operation faulty, replace
solenoid valve.
Cooling operation.
(1) Outdoor unit solenoid valve SV1.
(2) RB unit solenoid valves SVS
Heating operation.
(3) Outdoor units solenoid valves SV1,
SV7, and SV8.
(4) RB unit solenoid valve SVD.
Heat recovery operation (1), (2), (3), (4).
2. Outdoor fan motor faulty.
3. Discharge temperature
sensor THD1 faulty.
4. Electronic expansion valve
operation faulty.
5. Solenoid valve operation
faulty.
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Fujitsu AOY90 Specifications

General

Brand	Fujitsu
Model	AOY90
Category	Air Conditioner
Language	English