Ultra Heat GMV5 User Manual
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for more than six hours. Touch the unit to check whether it’s normally preheated. Start test
operation after unit is normally preheated, otherwise compressor might be damaged.
(2) Before the trial running, make sure the needed amount of refrigerant has been added to the
pipe or at least 70% of the needed refrigerant has been added.
(3) During the trial running, system will operate according to the ambient temperature.
1) When outdoor temperature is above 20℃(68℉), debugging shall be in cooling mode.
2) When outdoor temperature is below 20℃(68℉), debugging shall be in heating mode.
5.2.2.2 Trial Run
(1) The trial run should be carried out by the professionally skilled personnel on the premise that
all items listed above are in normal conditions.
(2) Let the unit energized and switch the wired controller or the remoter controller to “ON”.
(3) The fan motor and compressor of the outdoor unit will run automatically in three minutes.
(4) If there is some unusual so started, turn off the unit for an immediate check.
Before restarting the unit, make sure the compressor has been preheated for more than 6
hours.
6 Common Malfunctions and Troubleshooting
(1) In the event of abnormal conditions (like, stinky smell), please shut off the main power supply immediately and
then contact the GREE appointed service center; otherwise the continuous abnormal running would damage
the air conditioning unit and also would cause electric shock or fire hazard etc.
(2) Do not repair the air conditioning personally but instead contact the professionally skilled personnel at the
Gree appointed service center, as the incorrect repair would cause electric shock or fire hazard etc.
6.1 Check before Contacting Service Center
Broken fuse or opened breaker.
Change the fuse or close the breaker.
Restart the unit when power on.
Power supply plug is loose.
Plug the power supply properly.
Insufficient energy of remote
controller.
Remote controller out of the control
scope.
Keep the control distance within 8
meters
Clogged air intake/outlet of