Sanyo CHDX09663, CHDXR07263, CHDXR09663, CHDX07263 H08, H27 Alarm Alarm code, H31 Alarm Alarm code

4. W-2WAY ECO-i Alarm Codes

W-2WAY ECO-i SYSTEM Trouble Diagnosis

H08, H27 Alarm

Alarm code	H08, H27
Alarm meaning	Trouble (open circuit) with the oil sensor (connection) at compressor 1, compressor 2
Alarm conditions	This alarm occurs when a connector connection (pins 1 and 2 for compressor 1, pins 4
	and 5 for compressor 2) 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

H31 Alarm

Alarm code	H31
Alarm meaning	HIC trouble alarm
Alarm conditions	This alarm occurs when the microcomputer identifies a trouble signal (indicating abnormal HIC
	temperature or other trouble) from the HIC.
	The HIC judges the current and temperature, and outputs the trouble signal. In general this
	indicates trouble with the HIC itself.
Probable cause	Overcurrent in HIC circuit, and the resultant abnormal heating, caused by HIC failure
Check	Check the power wiring and connector wiring. If the wiring and connectors are normal, use a
	tester to measure the resistance between the compressor HIC power (HIC+) and ground (HIC–).
	If there is a short circuit, there is an HIC malfunction.
	HIC -	HIC +

	HIC PCB
Correction	If an HIC failure is found, replace the PCB.
Example	—
Notes	Turn OFF the power, and check the continuity of HIC+ and HIC– on the HIC PCB.

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