Sanyo UHX1852, UHX2452, UHX0752 E25 Alarm Alarm code, E26 Alarm Alarm code, E29 Alarm Alarm code

1

2

3

4

5

6

7

8

Trouble Diagnosis

3. W-2WAY ECO-i Alarm Codes

E25 Alarm

Alarm code	E25
Alarm meaning	Outdoor unit address setting failure (duplication)
Alarm conditions	Communication by the outdoor unit main/sub control wiring was received that contained the
	same address as that unit 5 times or more within 3 minutes.
Probable cause	The unit number is set incorrectly.
Check	Check the unit number again.
Correction	Correct the incorrect unit number setting.
Example	—
Notes	Recovery from this alarm occurs automatically (when communication that contains the same
	address is not received for 3 minutes).
E26 Alarm
Alarm code	E26
Alarm meaning	Mismatch in outdoor unit quantity
Alarm conditions	After power initialization, the set outdoor unit quantity did not match the number of outdoor units
	detected on the outdoor unit main/sub control wiring for 3 minutes or longer.
Probable cause	(1)	The outdoor unit quantity is set incorrectly.
	(2)	The outdoor unit main/sub control wiring is cut.
Check	(1)	Check the outdoor unit quantity setting again.
	(2)	Check the outdoor unit main/sub control wiring.
Correction	(1)	Correct the incorrect outdoor unit quantity setting.
	(2)	Repair the outdoor unit main/sub control wiring.
Example	—
Notes	Recovery from this alarm occurs automatically (when the set outdoor unit quantity matches the
	number of outdoor units detected on the outdoor unit main/sub control wiring).
E29 Alarm
Alarm code	E29
Alarm meaning	Outdoor unit (sub) failed to receive signal from outdoor unit (main).
Alarm conditions	Outdoor unit (sub) communications from outdoor unit (main) were interrupted for 3 minutes or longer.
Probable cause	(1)	After initial communications were completed, the outdoor unit main-sub control wiring was
		cut.
	(2)	After initial communications were completed, the RC connector (CN006) became disconnected.
	(3) The power at the outdoor unit (main) is turned OFF.
Check	(1)	Check the outdoor unit main/sub control wiring.
	(2)	Check the RC connectors.
	(3)	Check the power at the outdoor unit (main/sub).
Correction	(1) Repair the outdoor unit main/sub control wiring.

(2)Correct the RC connector connection.

(3)Turn ON the outdoor unit (main/sub) power.

Example—

Notes—

3-8