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[P19 error]
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SW804
SW801
CN701
Push
DC180V or more
Replace 4-way valve coil.
Check outdoor P.C. board.
Defective
→
Replace
Are 1.3 to 1.6k
Ω
applied to
resistance value of 4-way valve coil ?
Check outdoor P.C. board operation.
(See the following description.)
Check 4-way valve.
Defective
→
Replace
Is operation of 4-way valve normal?
(Check the pipe temp., etc.
during cooling/heating operation.
Check outdoor temperature sensors.
TE sensor
TS sensor
Indoor TC sensor
Defective
→
Correct, replace
YES
YES
OK
NO
NO
Defective
4
3
2
1
ON
SW804
SW801
1
CN701
Push
DC180V or more
4
3
2
1
ON
4
1
4
Operation check direction of the outdoor P.C. board (In case of self-preservation valve)
1) Set the Dip switch SW804 as same as the following table and push SW801 for approx. 1 second. It enables
you to check the exchange operation to cooling cycle or heating cycle.
• Only for approx. 10 seconds, the power is turned on.
• As the heat value of part (coil: resistance R700) is large, when checking the operation continuously, wait 1
minute or more until the next check. (There is no problem if a coil is not connected.)
2) After check, turn off all the Dip switches SW804.
Check by tester
Analog tester: Good article if over DC180V
Digital tester: Although in some cases, the value varied and indicated. If the maximum value is DC180V or
more, it is good article.
FILE NO. SVM-18038
- 54 -
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