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Heat Controller, Inc. OWNER’S MANUAL VMH Inverter Mini-Split
12
Troubleshooting Tips
Stop the air conditioner immediately if one of the following errors occurs. Disconnect the power and contact
an authorized servicer.
Call for
service if
If any of the following error codes appear on the LED window, disconnect the power and contact
an authorized servicer: E0, E1, E2, E3, E4, E5, E6, E7, E8, P0, P1, P2, P3, P4.
Fuse blows or circuit breaker trips frequently
Other abnormal situations (such as burning smells) that can’t be resolved using the steps outlined
below.
Symptoms Possible Cause/Things to Check What should be done?
Unit does
no start or
operate at
all
Is there power supplied to the unit?
Wait for the power to be restored or call an
electrician to address any power supply problem.
Fuse may have blown out or a circuit
breaker has been tripped.
Replace the fuse or ip the circuit breaker.
Batteries in remote controller may be dead
or installed incorrectly.
Replace the batteries and ensure the polarities
are correct.
Is the unit’s timer set? Wait or cancel timer setting.
Poor cooling
or heating
(heat pump
models only)
performance
Inappropriate temperature setting. Set temperature correctly.
Air lter may be blocked Clean the air lter to prevent air ow blockages.
Doors or windows are open.
Close the doors or windows within the area
being cooled/heated to increase efciency and
performance.
Air inlet or outlet of indoor or outdoor unit
are blocked.
Clear obstructions away, then restart the unit.
Compressor time delay has been activated
Wait approximately 3 minutes for the compressor
to turn on and the unit to begin cooling/heating.
If the problem persists after performing these checks, or if you notice burning smells, or the operation
indicator light ashes repeatedly, immediately stop operation, disconnect the power, and call an authorized
service center.