Whynter ARC-148MHP, Instruction Manual

Page: 17 / 19

17
TROUBLESHOOTING
Problem Possible Causes Solutions
The portable air conditioner
does not turn on

Power failure / outage

The automatic switch, line fuse, or
breaker has been tripped

The power supply voltage is too low

The power cord is damaged

The L.C.D.I. power plug for the unit
is tripped

The internal water reservoir is full
and ‘P1” appears on display

Restore the power supply

Flip the switch / change the fuse / turn
the breaker back on. Also note that
you may have too many appliances
drawing power on one circuit, you may
need to move the other appliances to
another circuit

Move the unit onto another circuit with
the correct voltage

Call for service. Only authorized per-
sonnel should replace damaged pow-
er cord or power plug

Press the Reset button on the L.C.D.I.
power plug

Drain water from the air conditioner

Possible loose internal connection.
Please contact Whynter for service
The unit turns on but the com-
pressor does not turn on (the
fan runs but the unit is not
cooling)

The room temperature is outside of
the operational tolerances of the
unit

The Cooling mode is not on

The compressor has not turned on
yet because of its time delay

The set temperature is too high

The internal water reservoir is full
and ‘P1” appears on display

This unit is designed to work in ambi-
ent temperatures of 63°F to 90°F

Press the MODE button until the
COOL light is shown on the display

Give the compressor 3 minutes to turn
on after the Cooling mode has been
selected

Set the air conditioner to a lower tem-
perature. It is recommended to set the
temperature to at least 5°F of the am-
bient temperature

Either manually drain the water by
removing the drain plug or allow the
unit to exhaust the water itself by run-
ning the fan only mode. Then cooling
will resume

Possible loose internal connection.
Please contact Whynter for service
The air coming out of the unit
is not very cold, or the airflow
volume is weak

The filters are dirty or obstructed

The air intake or exhaust is ob-
structed

The unit is set in DRY or FAN mode

The unit is set to low fan speed

Clean the air filters

Make sure there is at least 20" of
clearance from the air intake. Make
the length of the exhaust hose is as
short as possible

Set the unit to the cooling mode

Set the unit to a higher fan speed
Many common portable air conditioner problems are easily resolved. Try the troubleshooting suggestions
below to see if the problems can be resolved before having to contact the service department.