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Page 17
Unit displays A1 Audio
alarm sounding during start
up, phase monitor displays,
lock out “Front Fault” red
light
Phase monitor detects
reverse phasing, lost phase
or improper power incoming.
Exchange any line voltage
wire with the other, verify
incoming power. Auto reset
upon correction.
Unit displays A1, Audio
alarm is sounding during
start up, phase monitor
displays, lock out “Front
Fault” low volt red light.
Phase monitor detects
voltage lower than factory
setting.
Verify incoming power,
slowly raise voltage adjust
knob on the phase monitor
to match incoming power.
Auto reset upon correction.
Unit displays A1, Audio
alarm is sounding during
start up, phase monitor
displays, lock out “Front
Fault” high volt red light.
Phase monitor detects
voltage higher than factory
setting.
Verify incoming power,
Slowly lower voltage adjust
knob on the phase monitor to
match incoming power.
System starts up but goes
into visual and audible alarm
A1 when the compressor
starts.
Phase monitor detects
voltage drop.
Observe the phase monitor
on start for fault lights and
adjust the monitor accord-
ingly, verify incoming power.
Auto reset upon correction.
Check wire size and voltage
drop.
Unit displays A1, Alarm is
sounding during start up or
during operation, phase
monitor displays “Back
Fault” red light.
A fault has been detected
from one of the unit’s
condenser motors.
Inspect motor components
for faulty or loose connec-
tions and proper operation,
Call 1-800-KwiKool for
guidance.
A: Systems Equipped with a Standard Phase Monitor
Fault Possible Cause Possible Solution
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