Service manual

Error Codes: Outdoor Units ESIE03–01
3–58 Part 3 – Troubleshooting
3
1
3
4
5
3.13 Abnormal Heat Exchanging Temperature (F6)
Remote Controller
Display
F6
Method of
Malfunction
Detection
The high pressure control (stop) is made according to temperature detected with outdoor unit heat
exchanging thermistor in cooling operation or indoor unit heat exchanging thermistor in heating
operation.
Malfunction
Decision
Conditions
When the outdoor unit heat exchanging temperature in cooling operation or the indoor unit heat
exchanging temperature in heating operation exceeds a rated value. (Refer to information in Part 7
"Function and Operation".)
Possible Causes
P Clogged indoor unit suction filter (in heating operation)
P Dirty outdoor unit heat exchanger
P Faulty outdoor unit fan
P Excessive charging of refrigerant
P Failure to open the stop valve
Troubleshooting
* See "Evaluation of abnormal high pressure" on page 81
ì
YES
Check for the
installation conditions.
Is the stop
valve open?
High pressure
is too high (*).
NO
YES
Open the stop valve.
Correct the high pressure.
In cooling operation:
Dirty outdoor unit heat
exchanger
In heating operation:
Dirty indoor unit heat
exchanger
Excessive charging of
refrigerant
See "Evaluation of
abnormal high
pressure" on page 3–81