Honeywell HN Series - User Manual

Questions and Answers

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cookkaraJul 27, 2025
What to do if Honeywell HN Air Conditioner runs but not cooling?
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  Brandy WalkerJul 28, 2025
  If your Honeywell Air Conditioner runs but isn't cooling, start by checking for open doors or windows and ensure they are closed. Clean the dust filter, as a dirty filter can impede cooling. Verify that the exhaust hose is correctly reinstalled. Also, make sure that the temperature setting isn't too high; try lowering it on the control panel. Confirm that neither the air outlet nor the intake is blocked, and if the room is too large for the unit, consider moving it to a smaller space. Finally, cover any large windows with curtains or blinds to reduce heat.
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Daniel LopezAug 1, 2025
What to do if Honeywell Air Conditioner won't run and WATER FULL indicator is on?
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  mike76Aug 1, 2025
  If your Honeywell Air Conditioner won't run and the WATER FULL indicator is on, it means there's too much water condensation inside the tank. To resolve this, drain the water from the unit.
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Paige ThomasAug 6, 2025
How to troubleshoot Honeywell Air Conditioner that won't start?
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  Jose WarrenAug 6, 2025
  If your Honeywell Air Conditioner doesn't start, several factors could be at play. First, ensure the unit is receiving power by checking the power cord and outlet. Remove and reconnect the power cord to ensure a secure connection. If you're in the USA, Canada, or Mexico, examine the safety LCDI plug and reset it if it has tripped. Also, check the batteries in the remote control and replace them if necessary.
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paulrushAug 11, 2025
Why Honeywell HN Air Conditioner runs a short while only?
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  Joseph PearsonAug 12, 2025
  If your Honeywell Air Conditioner runs for only a short while, it could be due to a few reasons. Check that the thermostat temperature setting isn't too close to the room temperature; lowering the set temperature might help. Also, ensure that the air outlet isn't blocked and that the exhaust hose is properly connected. Finally, check for tight bends in the air exhaust hose and connect it as per instructions.
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James WilliamsAug 16, 2025
Why Honeywell HN heater is not switching ON?
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  Michael CarpenterAug 16, 2025
  If the heater on your Honeywell Air Conditioner isn't switching on, first ensure that the Heating function has been activated. The indicator will light up when the heater is on. Also, make sure the temperature setting isn't too low; increase it to activate the heating function.
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Amy TurnerAug 22, 2025
Why Honeywell Air Conditioner keeps switching off frequently in Heating Mode?
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  Daniel Kim PhDAug 22, 2025
  If your Honeywell Air Conditioner keeps switching off frequently in Heating Mode, it might be because the room is too humid, causing the water tank to fill quickly. To address this, empty the water tank. It's recommended to use the heat mode in environments with 50% humidity or less. Also, switch off any appliances like humidifiers or kettles to reduce moisture buildup in the room while using heat mode.

Summary

SAFETY

READ AND SAVE THESE INSTRUCTIONS

WARNING

Lists critical safety precautions and warnings for operating the appliance.

INSTALLATION

Installation Steps

TROUBLESHOOTING GUIDE

The air conditioning unit does not start

Troubleshoots issues preventing the air conditioning unit from starting up.

Runs a short while only

In Heating Mode*, the unit keeps switching off frequently.

Runs but not cooling

Diagnoses and resolves issues where the unit runs but does not provide cooling.

Will not run and WATER FULL indicator is on

Solves the problem of the unit not running due to the water full indicator being on.

ERROR CODE GUIDE

Heater* is not switching ON

E1

Indoor temperature sensor failure (open circuit or short circuit).

E3

Evaporator temperature sensor failure (open circuit or short circuit).

P1

Water full alarm.

Honeywell HN Series Specifications

General

Type	Portable Air Conditioner
Fan Speeds	3
Refrigerant	R410A
Voltage	115V
Cooling Capacity	10, 000 BTU/h
Noise Level	52 dB
Features	Remote control, programmable timer
Operating Temperature (Cooling)	64°F - 90°F
Noise Level (Indoor Unit)	52 dB
Dimensions (Indoor Unit)	17.5 x 13.8 x 28.1 inches
Weight (Indoor Unit)	62 lbs
Warranty	1-year limited warranty