45MBDAQ: Owner’s Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
18
TROUBLESHOOTING (CONT)
When issues occur, please review the following common issues in Table 3 prior to contacting a service company.
NOTE: If your problem persists after performing the checks and diagnostics above, turn o your unit immediately and contact an authorized
service center.
Table 3 — Troubleshooting Tips
Table 4 — Troubleshoot Your Wireless Remote Control
PROBLEM POSSIBLE CAUSES SOLUTION
The unit is not working
Power failure Wait for the power to be restored
The power is turned off Turn on the power
The fuse is burned out Replace the fuse
Remote control batteries are dead Replace batteries
The Unit’s 3-minute protection has been activated Wait three minutes after restarting the unit
Timer is activated Turn timer off
The unit starts and stops frequently
There’s too much or too little refrigerant in the
system
Check for leaks and recharge the system with
refrigerant.
Incompressible gas or moisture has entered the
system.
Evacuate and recharge the system with refrigerant
System circuit is blocked
Determine which circuit is blocked and replace the
malfunctioning piece of equipment
The compressor is broken Replace the compressor
The voltage is too high or too low Install a manostat to regulate the voltage
Poor heating performance
The outdoor temperature is extremely low Use auxiliary heating device
Cold air is entering through doors and windows
Make sure that all doors and windows are closed
during use
Low refrigerant due to leak or long-term use
Check for leaks, re-seal if necessary and top off
refrigerant
Indicator Lamps Continue Flashing -
Error code appears and begins with the
letters as the following in the window
display of indoor unit:
E(x), P(x), F(x), EH(xx), EL(xx), EC(xx)
PH(xx), PL(xx), PC(xx)
The unit may stop operation or continue to run safely. If the indicator lamps continue to flash or error codes
appear, wait for about 10 minutes. The problem may resolve itself.
If not, disconnect the power, then connect it again. Turn the unit on. If the problem persists, disconnect the
power and contact your nearest customer service center.
PROBLEM POSSIBLE CAUSES SOLUTION
The fan speed cannot be changed.
Check whether AUTO mode is selected.
In AUTO mode, the fan speed is set automatically
and cannot be changed.
Check whether DRY mode is selected.
In DRY mode, the FAN SPEED button is ineffective.
The fan speed can only be changed in COOL, FAN
and HEAT mode.
The temperature display is off Check whether FAN mode is selected. In FAN mode, the temperature cannot be adjusted.
The TIMER OFF disappears after a period
of time
If the TIMER OFF function was activated, the
operation may have finished
The air conditioner will automatically stop at the set
time and the indicator light will turn off.
The TIMER ON indicator disappears after
a period of time
If the TIMER ON function was activated, the
operation may have finished
The air conditioner will automatically start at the set
time and the indicator light will turn off
There is no sound when the ON/OFF
button is pressed.
Check whether the signal transmitter of the remote
control is properly directed towards the infrared
signal receiver of the indoor unit.
Point the remote control directly at the receiver and
press the ON/OFF button twice.
NOTE: If your problem persists after performing the checks and diagnostics above turn off your unit immediately and contact an
authorized service center.
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