Kikusui PLZ-4WH Series User Manual page 126

Troubleshooting
Check Item
Location and Status of the Object Check Result
Is the fan stopped?
Is the air intake or outlet
obstructed?
Is OCP tripped?
Is OPP tripped?
Check Item
Location and Status of the Object Check Result
A sequence is in operation
Are you using an external
signal to turn the load off?
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Symptom 5:ALARM is activated.
Possible Cause
Yes Overheat protection tripped.
Yes Overheat protection tripped.
Clogged dust filter
Yes The OCP setting is small.
Yes The OPP setting is small.
Symptom 6:The load cannot be turned on.
Possible Cause
→
Yes
No The load on/off logic (Load ON
IN) is set to low.
→
Yes
Remedy
Immediately stop the use of the instrument
and request repairs.
Allow at least 20 cm between the air outlet
and the wall. In addition, do not place
objects within 20 cm.
Clean the dust filter.
Reset the OCP value in the setup screen.
See: "Protection Functions" on page 53
Reset the OPP value in the setup screen.
See: "Protection Functions" on page 53
Remedy
Wait for the sequence operation to finish.
Abort the sequence by pressing STOP.
In the menu, select "Configuration" and set
"Load ON INput" to "HIGH."
See: "Menu" on page 58
The load key will be valid after you use an
external signal to turn the load on.
See: "Turning the Load On and Off
through External Control" on page 98
PLZ-4WH