186
TROUBLESHOOTING
4) Engine Coolant Temperature Abnormality
For diagnosis and repair, Refer to P306 and after, [Wiring Diagram of the Outdoor Unit] or Refer to P233 and after, [Board Main-
tenance Functions].
5) Oil Pressure Abnormality
For diagnosis and repair, Refer to P306 and after, [Wiring Diagram of the Outdoor Unit] or Refer to P233 and after, [Board Main-
tenance Functions].
Problem Possible Cause Specific Example Inspection and Treatment
EC (80) error
EH (80) error
HC (70) error
HC (80) error
HJ (80) error
Engine coolant
circulation failure
Insufficient engine coolant
Refer to P214, 22)Check Engine Coolant
Circulation
Refer to P214, 23)Check Engine Coolant
Amount or Leakage Location
Engine coolant
pump operation
failure
Engine coolant pump
failure
Refer to P215, 24)Inspect Engine Cool-
ant Pump
Output failure
Thermostat failure Refer to P216, 25)Inspect Thermostat
Insufficient heat
dissipation
Air temperature around the outdoor unit is too
high
Refer to P216, 26)Check Engine Coolant
Heat Dissipation Condition (in cooling)
Short circuit
Clogged radiator fins Clean the radiator fins
Outdoor fan
motor operation
failure
Outdoor fan motor failure
Refer to P217, 27)Inspect Outdoor Fan
Motor
Output failure
Sensor/Harness
system failure
Engine coolant temperature sensor failure
Refer to P218, 28)Inspect Engine Cool-
ant Temperature Sensor
Disconnection / Short circuit
Lowered boiling
point
Radiator cap failure Refer to P218, 29)Inspect Radiator Cap
Problem Possible Cause Specific Example Inspection and Treatment
FE (81) error
JE (71) error
Engine oil pressure
switch malfunction
Engine oil pressure switch failure
Refer to P220, 34)Inspect Engine Oil Pres-
sure Switch
Contact failure
Low oil pressure
Insufficient engine oil amount
Refer to P218, 30)Check Engine Oil
Amount
Engine oil leakage
Refer to P219, 31)Check Engine Oil Leak-
age
Abnormal engine oil consumption
Refer to P219, 32)Check Engine Oil Con-
sumption Amount
Check engine oil pressure
Refer to P220, 33)Inspect Oil Pressure
Clogged oil strainer
Noise or other causes
Malfunction caused by induction noise
from the ignition system
Refer to P201, 11)Inspect High Voltage
Cable
Starter drive system terminal contact
failure
Refer to P211, 18)Check for Contact Fail-
ure at the Starter Drive System
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