Kikusui PAN 110-1.5A, Operation Manual

Page: 127 / 160

PAN-A 6-11
Chap
.6
Maintenance
1
■
Symptom 3: When you turn on the OUTPUT switch, the
POWER switch is turned off or the "ALM"
LED lights up.
Check item Cause and remedy
Check that the OVP trip
point is not preset to a
level below output volt-
age.
• The overvoltage protection circuit has been
activated. Preset the OVP trip point to a level
above the output voltage. See "3.2.1
OVP(Over Voltage Protection) trip point pre-
setting".
Check that the actual out-
put voltage is not higher
than voltage displayed on
the panel.
• The overvoltage protection circuit has been
activated. The voltage system requires calibra-
tion. Re-calibrate the unit by referring to
"6.3.2 Adjustment procedure".
Check that the SENS
switch is not on.
• The overvoltage protection circuit has been
activated. The SENS switch should be off
when the remote sensing function is not used.
Check that no special load
is connected.
• The overvoltage protection circuit has been
activated. See the item "Load" in "2.4 Load".
Check that control wires
are secure in controlling
output with external resis-
tor.
• The overvoltage protection circuit or overcur-
rent protection circuit has been activated. Con-
nect the control wires correctly by referring to
Sections "4.3.1 Controlling output voltage
with external resistor" or "4.3.3 Controlling
output current with external resistor".
Check that control wires
are secure and that exter-
nal voltage is not exces-
sive in controlling output
with external voltage.
• The overvoltage protection circuit or overcur-
rent protection circuit has been activated. Con-
nect the control wires correctly by referring to
Sections "4.3.2 Controlling output voltage
with external voltage" or "4.3.4 Controlling
output current with external voltage".
Check to see if the fan
runs normally.
• The overheat protection circuit has been acti-
vated. Ambient temperature has exceeded the
operating ambient temperature or the fan has
possibly failed. If the fan does not run when
the unit is used in the range of 0
˚ C to 40 ˚ C.