Heat Controller, Inc. | OWNER’S MANUAL | VMH Inverter |
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? | |
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| Is there power supplied to the unit? | Wait for the power to be restored or call an | |
| electrician to address any power supply problem. | ||
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Unit does | Fuse may have blown out or a circuit | Replace the fuse or flip the circuit breaker. | |
breaker has been tripped. | |||
no start or |
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operate at | Batteries in remote controller may be dead | Replace the batteries and ensure the polarities | |
all | |||
or installed incorrectly. | are correct. | ||
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| Is the unit’s timer set? | Wait or cancel timer setting. | |
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| Inappropriate temperature setting. | Set temperature correctly. | |
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Poor cooling | Air filter may be blocked | Clean the air filter to prevent air flow blockages. | |
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or heating |
| Close the doors or windows within the area | |
(heat pump | Doors or windows are open. | being cooled/heated to increase efficiency and | |
models only) |
| performance. | |
performance | Air inlet or outlet of indoor or outdoor unit | Clear obstructions away, then restart the unit. | |
| are blocked. | ||
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| Compressor time delay has been activated | Wait approximately 3 minutes for the compressor | |
| to turn on and the unit to begin cooling/heating. | ||
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If the problem persists after performing these checks, or if you notice burning smells, or the operation indicator light flashes repeatedly, immediately stop operation, disconnect the power, and call an authorized service center.
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