4. 2WAY Alarm Codes
H08, H27, H28 Alarm
Alarm code
H08, H27, H28
Alarm meaning
Trouble (open circuit) with the oil sensor (connection) at compressor 1, compressor 2,
or compressor 3
Alarm conditions
This alarm occurs when a connector connection (pins 1 and 2 for compressor 1, pins 4
and 5 for compressor 2, and pins 7 and 8 for compressor 3) is open.
Probable cause
Disconnected connector
Check
Check that the connector is securely connected.
Correction
(1) Connect the connector.
(2) Correct the connection at connector pins 4 and 5.
Example
—
Notes
3-21
2WAY SYSTEM
Trouble Diagnosis
1
2
3
4
5
6
7
8