Question 1

the exhaust hose connector feels loose and hot air is leaking into the room at the unit.

Accepted Answer

DIAGNOSIS The hose isn't fully locked onto the unit's vent port. A poor seal here drastically reduces cooling efficiency by allowing hot exhaust air to recirculate back into the room. FIX Secure the hose connection properly. Detach the hose completely from the unit's port. Inspect the plastic locking collar on the hose end and the grooves on the unit's port. Make sure they are clean and not broken. Align the tabs on the hose end with the slots on the port. Push the hose on firmly until you hear/feel a distinct CLICK. Manually twist the locking collar on the hose clockwise until it stops to lock it in place. It should not wobble. IF THAT DIDN'T WORK The rubber gasket/seal inside the hose connector or on the unit's port may be missing or damaged. Check for it. A temporary fix is to wrap the unit's port with HVAC foil tape before attaching the hose to create a tighter seal. HEADS UP Always use BOTH hoses. The thin hose is for intake, the wide hose is for exhaust. Connecting them backwards or using only one forces the unit to pull cool room air and expel it, killing efficiency and heating the hose.

Question 2

the fan speed won't change when i press the button, it's stuck on low.

Accepted Answer

DIAGNOSIS The control board is not registering your button presses, likely due to a stuck or faulty button membrane on the control panel, or a temporary electronic glitch. FIX Perform a hard reset and clean the controls. Unplug the unit from the wall outlet for 5 full minutes. This resets the main control board. While unplugged, press and hold the power button on the unit's panel for 10 seconds to discharge any residual power. Wipe the entire control panel area with a slightly damp cloth, then dry it, to clean any sticky residue off the buttons. Plug the unit back in and try changing the fan speed using the buttons on the UNIT itself, not the remote. IF THAT DIDN'T WORK The fan speed button on the control panel itself may be physically damaged. If the remote can still change fan speeds, the issue is the unit's button. You would need to replace the control panel assembly. HEADS UP In some modes, like 'DRY' (dehumidify), the fan speed is automatically controlled by the unit and may not respond to manual changes. Test in regular 'COOL' mode.

Question 3

it's leaking water onto my floor from the bottom, not the drain plug.

Accepted Answer

DIAGNOSIS Water is likely overflowing from the internal condensate pan because the primary drain path is blocked, or the unit is tilted forward. FIX Clear the main drain channel and re-level the unit. Unplug the unit and pull it away from the wall. Check that the lower rubber drain plug on the back is inserted fully and securely. A loose plug is the #1 cause. Remove the plug and use a small funnel and some warm water to gently flush the drain outlet backwards to clear any algae or sludge blockage. Use a level on top of the unit. Adjust the front casters (they screw up/down) so the unit is perfectly level or tilted VERY slightly BACK towards the drain port. IF THAT DIDN'T WORK The internal drain pan or tubing might be cracked or disconnected. This requires disassembly. Before going there, ensure you're not seeing condensation forming on the cold exhaust hose and dripping—insulate the hose with a towel if needed. HEADS UP In high humidity, this unit produces a lot of water. For peace of mind, always use the continuous drain option. Connect a hose to the UPPER drain port on the back and run it to a floor drain or bucket.

Question 4

the remote works sometimes but then it just stops responding, do i need new batteries?

Accepted Answer

DIAGNOSIS This is a known interference issue. The infrared (IR) signal from the remote is being blocked or competing with other IR sources (like LED lights, TVs) or the sensor on the unit is in a poor location. FIX Rule out interference and improve line-of-sight. First, replace the remote batteries with fresh ones (CR2025). Weak batteries have inconsistent range. When operating, point the remote directly at the control panel on the top-front of the unit, not at the vents or sides. Turn off or shield nearby sources of bright LED lighting, which can flood the IR sensor with noise. Reduce the distance. The remote has a relatively short effective range. IF THAT DIDN'T WORK The IR receiver window on the unit might be dusty. Wipe the small, dark plastic panel on the control area with a dry cloth. As a last resort, you can use buttons on the unit's control panel, which are always reliable. HEADS UP The unit has a "remote lock" feature (hold the "Lock" button on the remote). If activated, the panel buttons are disabled. Press and hold the Lock button again to unlock it if you accidentally enabled it.

Question 5

how do you clean the filter on this thing? i can't find where it is.

Accepted Answer

DIAGNOSIS The main air filter is behind the front grille. It's a washable foam filter that gets clogged with dust, reducing airflow and cooling efficiency. FIX Clean it monthly during use. Turn the unit OFF and unplug it. Grip the front grille at the sides and pull it straight forward to detach it. The large rectangular gray foam filter is right behind it. Remove it. Rinse it thoroughly under lukewarm water. Gently squeeze out dirt—don't wring or twist it. Let it air dry COMPLETELY before reinstalling. Reattach the grille by aligning the tabs and pressing until it clicks. IF THAT DIDN'T WORK If airflow still seems weak after cleaning, check the air intake on the back of the unit for obstruction (like furniture or curtains). Also, vacuum the rear condenser coil fins through the grill carefully to remove dust buildup. HEADS UP Never run the unit without the filter. It protects the internal coil. A wet filter can cause mold and ice buildup on the coils. Ensure it's 100% dry.

Question 6

it's making a loud gurgling or water sloshing noise, is that normal?

Accepted Answer

DIAGNOSIS Yes, this is normal for this model. It's the sound of refrigerant moving through the coils, combined with condensate water collecting in and sloshing against the internal drain pan during operation. FIX The noise can't be eliminated, but you can minimize it. Ensure the unit is sitting perfectly level on all four casters. Use a small level. An unlevel unit makes water pool unevenly and creates more sloshing. Engage the continuous drain with a hose. This prevents water from accumulating in the internal pan, which often reduces the sloshing sound significantly. IF THAT DIDN'T WORK If the gurgling is accompanied by a drastic loss of cooling, it could indicate a refrigerant leak (where gas mixes with liquid in the lines). But for just the noise alone, it's a characteristic of the unit's design. HEADS UP The noise is often most noticeable right after you turn the unit off, as the system equalizes. Don't mistake this for a malfunction.

Question 7

why is my portable ac blowing air but not cooling at all? it's just a fan now.

Accepted Answer

DIAGNOSIS The refrigerant circuit isn't engaging. The most common cause is an installation issue with the exhaust hose, creating a vacuum that trips a safety sensor. FIX Check the window vent kit and hose for a proper, airtight seal. Ensure the adjustable window panel is securely fitted to your window frame with no large gaps. Use the foam seals provided. Check both ends of the exhaust hose. It must click and lock fully onto the unit's vent port and the window panel's adapter. Make sure the hose itself isn't kinked or severely bent, which restricts airflow. IF THAT DIDN'T WORK The unit may have lost refrigerant due to a leak, which requires professional service. Before assuming that, let the unit sit powered OFF for an hour. Sometimes the internal compressor overload protector needs to reset after an overheat. HEADS UP This unit is dual-hose. For proper cooling, BOTH hoses (intake and exhaust) must be connected to the window kit. Running with only the exhaust hose connected cripples performance and can cause the no-cool symptom.

Question 8

my whynter arc-14s just flashes 'fl' and won't turn on, what is that?

Accepted Answer

DIAGNOSIS The 'FL' code means the condensate reservoir inside the unit is full. The unit has a safety shutoff to prevent water overflow. This happens when running in cool mode for a long time, especially in high humidity. FIX You need to drain the internal tank. Turn the unit OFF and unplug it. Move it to a location where you can drain water (like near a floor drain or onto a towel). Remove the lower drain plug on the back of the unit (it's a rubber stopper). Let all water drain out completely. Replace the plug firmly. The 'FL' code should clear once you plug the unit back in and turn it on. IF THAT DIDN'T WORK If the code returns immediately, the float sensor inside might be stuck. With the unit unplugged, give the back and sides a firm but careful tap to try to free it. If it persists, you may need to run the unit in 'DRY' mode for a few hours to see if the sensor resets, or contact support. HEADS UP For continuous operation, use the continuous drain hose. Connect a standard garden hose to the upper drain port on the back and run it to a floor drain. This bypasses the internal tank entirely and prevents the 'FL' code.

Whynter ARC-14S Portable Air Conditioner

Other Portable AC & Fans