Base aire AirWerx 35P

Questions and Answers

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deanwolfeAug 8, 2025
Why does my Base Aire Dehumidifier show HI or LO error code?
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  Debra AdamsAug 8, 2025
  If your Base Aire Dehumidifier displays the error code HI or LO, it means the room temperature is either above 105°F (HI) or below 33°F (LO). Adjust the room temperature to be between 33°F and 105°F for the unit to operate. If the room temperature is within this range and the error persists, the sensor may need replacement.
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Megan CrawfordAug 13, 2025
How to fix a Base Aire Dehumidifier that won't turn on?
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  Philip DixonAug 13, 2025
  If your Base Aire Dehumidifier isn't running, check the following: * **Power Supply:** Ensure the outlet has power and the plug is correctly inserted. * **Room Temperature:** The system won't operate if the room temperature is above 105°F (HI Displayed) or below 33°F. Modify the room conditions to be within this range. Also, the machine set humidity degree must be less than ambient humidity for machine to operate.
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Charles MosleyAug 17, 2025
What to do if my Base aire AirWerx 35P Dehumidifier shows E:4 error?
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  Charles ThorntonAug 17, 2025
  If your Base Aire Dehumidifier displays trouble code E:4, it indicates a water pump failure. To resolve this: 1. Confirm if the pump is malfunctioning. 2. Unplug the unit for two minutes, then restart it. 3. Check if the float switch is working. 4. Verify whether the motherboard chip is damaged.
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Nicole CarrAug 21, 2025
Why is my Base Aire Dehumidifier making a loud noise?
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  gene42Aug 21, 2025
  If your Base Aire Dehumidifier is making a loud noise, it could be due to the following reasons: * **Not Level:** The machine may not be on a flat surface. Move it to a flat surface. * **Clogged Filter:** The filter might be clogged. Clean the filter according to the instructions listed in the manual.
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David MaldonadoAug 26, 2025
What does E:5 error mean on my Base Aire Dehumidifier?
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  Levi SmithAug 27, 2025
  If your Base Aire Dehumidifier displays trouble code E:5, it suggests a coil temperature failure or a lack of fluorine in the compressor. Check if the coil temperature connector is off or if there's a coil temperature failure, or if the compressor lacks fluorine.
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Charles PerkinsAug 29, 2025
Why does my Base aire AirWerx 35P have low air flow?
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  Daniel LawsonAug 30, 2025
  If your Base Aire Dehumidifier has low air flow, it could be due to: * **Clogged Air Filter:** Clean the filter according to the instructions in the manual. * **Blocked Air Inlet/Outlet:** Clear any blockage on the air inlet or outlet.
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sarah95Sep 3, 2025
What does trouble code E:1 mean on a Base aire AirWerx 35P Dehumidifier?
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  Dylan NelsonSep 3, 2025
  If your Base Aire Dehumidifier displays trouble code E:1, it indicates an issue with the humidity sensor. Check the wire connections at both ends of the sensor. If the connections are fine, the sensor itself may be faulty.

Overview

Important Safety Notes
Installation
Key Functions (Control Panel)
Indicator Lights
Remote Control Instructions (Optional Wired Remote Accessory)
Maintenance
Dehumidifier Storage
Troubleshooting (Common Issues)
Pump Alarm Trouble Code E4 (Specific Steps)
Water Pump Fault Judgment and Maintenance Methods (for E4 code)
Water Pump Repair Method
Gravity Drainage vs. Pump Drainage
Warranty Information
Limited Warranty Exclusions
Spare Parts (AirWerx 35P Models-Parts)

The BaseAire AirWerx 35P is a dehumidifier designed for drying crawl spaces and basements. It is an electrical appliance that requires a grounded connection (115V, 60Hz AC, single phase) with a 3-hole GFCI outlet and a 15-amp circuit protector. The unit operates by reading the relative humidity in a room. When the detected humidity exceeds the setpoint, the dehumidifier automatically turns on. Air passes through an evaporator coil, where moisture condenses out, and is then reheated by a condenser coil before being distributed back into the room.

Important Safety Notes:

Always use a grounded electrical connection. Using a non-grounded wire voids the warranty.
Maintenance and repairs should only be performed by a qualified technician.
The unit is intended for operation only when standing and horizontal to prevent water from flooding electrical components.
Always unplug the dehumidifier before moving it.
If water threatens to flood the unit, turn it off and unplug it immediately.
Ensure the air inlet and outlet are at least 6 feet away from walls or obstructions for proper operation.
Do not insert fingers or objects into the inlet or outlet holes.
Turn off and unplug the dehumidifier before performing maintenance or repairs.
Do not use water to clean the exterior; wipe with a damp cloth after unplugging.
Do not stand on the machine or use it for hanging clothes.
Do not install in corrosive environments or where liquid vapor barriers are drying by "solvent evaporation" unless the barrier is completely dry.

Installation:

Level Surface: Place the dehumidifier on a level surface, preferably on a block or paver, not directly on a vapor barrier.
Post-Delivery Wait: Allow at least 12 hours after delivery before turning on the dehumidifier.
Drain Line Setup:
- For the pump drain system, remove the nut from the drain nozzle before connecting the drain hose.
- For the gravity drain system, locate the other drain nozzle on the side of the unit, remove the drain plug, and connect a drain hose with a larger inner diameter.
Power Connection: Plug the unit into a 15-amp ground circuit.

Key Functions (Control Panel):

"ON/OFF" Button: Turns the dehumidifier on or off. When turning off, there is a 120-second fan delay; do not unplug until the fan stops.
"SET" Button: Changes the humidity setpoint from 25% to 80% in 5% increments. Can also be set to "CO" (Continuous Operation) mode.
"Drain" Button: Hold for at least 3 seconds to switch between pump drain and gravity drain systems.
- Water Pump Drainage Mode: "Pump" light is ON. The gravity drain nozzle must be blocked. Pressing once forces the pump to drain the water tray for 14 seconds. If a high water level is detected after 14 seconds, an "E4" error code will display.
- Gravity Drainage Mode: "Pump" light is OFF. The Water Tray Plug should be removed. If a high water level is detected by the float switch for 14 seconds, an "E4" error code will display, and the dehumidifier will stop to prevent leaks.
- Note: When moving the machine, wait at least 10 minutes after turning off to allow moisture to drip down. Tilt the dehumidifier towards the drain hole to remove collected water completely.
"GPP" Button: Changes the humidity reading from RH% (Relative Humidity) to GPP (Grains per Pound). GPP setpoint can be from 25 to 200.
"SET + Drain" Key Combination: Press and hold for 3 seconds to display the temperature of the temperature sensor.
"SET + GPP" Key Combination: Press and hold for 3 seconds to display the temperature of the coil in Celsius.

Indicator Lights:

Humidity Display Screen:
- Default: Displays the Relative Humidity level.
- During setpoint adjustment: Displays the current setpoint, then returns to RH after 2-3 seconds.
Operation Indicator (Power): Solid green when ON. Flashing green indicates the desired humidity setpoint has been reached.
Continuous Mode Light (Continue): Solid green when in continuous operation mode. Off in other states.
Water Pump Drainage (Pump): ON in water pump mode, OFF in gravity drainage mode (factory default).
GPP Mode Indicator (GPP): ON when the compressor is in GPP mode, OFF in regular mode.

Remote Control Instructions (Optional Wired Remote Accessory):

The AirWerx 35P can be controlled by an optional wired remote connected via a 25-inch CAT5 cable. The remote has an integrated sensor for temperature and humidity.

On/Off Power (Button): Starts/stops the machine.
Up Button / Down Button: Adjusts the humidity level.
Mode M: Switches between dehumidification and ducted application.
- A circle symbol on the display indicates the remote control's sensor is being used.
- A diamond symbol on the display indicates the dehumidifier's sensor is being used.
Temperature T: Displays current temperature. Toggles between °C / °F.
Continuous C: Switches the unit to continuous mode; "cont" appears on the display.
Drain Pump P: Drains or pumps collected moisture. This symbol only appears when the dehumidifier is powered on. "Draining" appears on the screen during drainage.

Maintenance:

Cleaning the Body: Use a soft, damp cloth to clean the exterior. Do not use soap or solvent.
Coil Maintenance: Clean coils once a year with an approved self-cleaning, foaming coil cleaner (e.g., WEB® Coil Cleaner).
WARNING: Always unplug the power before performing any maintenance.

Dehumidifier Storage:

If storing for an extended period:

Turn off the unit and allow it to dry.
Pack and secure the power cord.
Cover the filter.
Store in a clean, dry place.

Troubleshooting (Common Issues):

Machine Won't Run:
- Cause: No power supply. Solution: Verify outlet power and plug installation.
- Cause: Room temperature exceeds 105°F (HI displayed) or is below 33°F (LO displayed). Solution: Modify room conditions to be between 33°F and 105°F. (Machine set humidity must be less than ambient humidity).
Low Air Flow:
- Cause: Air filter is clogged. Solution: Clean the filter.
- Cause: Air inlet or outlet is clogged. Solution: Clear blockages.
Loud Noise:
- Cause: Machine is not level. Solution: Move to a flat surface.
- Cause: Filter is clogged. Solution: Clean the filter.
Trouble Code E: 1:
- Cause: Humidity sensor issues. Solution: Check wire connections. If no visible problems, the sensor may be faulty.
Trouble Code E: 4:
- Cause: Water pump failure. Solution: Confirm pump malfunction. Unplug for two minutes and restart. Check float switch and motherboard chip.
Trouble Code: HI or LO:
- Cause: Room temperature exceeds 105°F (HI displayed) or below 33°F (LO displayed). Solution: Modify room conditions to be between 33°F and 105°F. If conditions are within range, replace the sensor.
Trouble Code E: 5:
- Cause: Coil temperature failure or compressor lack of fluorine. Solution: Check coil temperature connector or coil temperature failure, compressor lack of fluorine.

Pump Alarm Trouble Code E4 (Specific Steps):

Reset the unit by disconnecting and reconnecting the power cord. (Unit will not work until the error code is cleared).
Manually check pump operation by pressing the drain button. Verify power and water drainage.
Check the discharge line for obstructions and the balance of the pump system if not recently cleaned.

If maintenance is insufficient, hoses and/or pumps may need replacement.

Water Pump Fault Judgment and Maintenance Methods (for E4 code):

Drainage hose is blocked, bent, or deformed.
Drainage height exceeds the standard (max 19.6ft for pump drainage).
Water level switch failure.
Water pump malfunctioning or expired service life.
Internal water pump hose is blocked, bent, or deformed.

Water Pump Repair Method:

Unscrew screws on the water pump panel to access the pump.
Unscrew the pump fixing bracket screw.
Pull out the hose from the water reservoir and remove the water pump for replacement.
Install the new water pump by reversing the above steps.

Gravity Drainage vs. Pump Drainage:

Gravity Drainage: If using gravity drainage, elevate the unit from the ground (e.g., hang on floor joist or place on a level object) to ensure it is higher than the drain pipe. Failure to do so will result in water leaks.
Pump Drainage: The pump can discharge water up to 19.6 feet vertically.

Warranty Information:

Six (6) months: Parts and labor, including shipment of replacement parts/equipment.
One (1) year: Parts and labor (excluding shipping defective product back for repair/replacement).
Three (3) years: Parts and labor on refrigeration system (compressor, condenser, evaporator), excluding transportation costs.
Five (5) years: Parts only on refrigeration system (compressor, condenser, evaporator), excluding shipping costs.
Applies only to units purchased from the manufacturer or an authorized BaseAire dealer, used according to the User's Guide.
BaseAire does not provide home service; shipping costs to the manufacturer for service may be the buyer's responsibility.
To obtain service, contact BaseAire at 888-641-8862 or sales@baseaire.com. Proof of purchase/order number is required.
Product will be repaired or replaced at BaseAire's sole discretion.

Limited Warranty Exclusions:

Damage from unintended use.
Damage from unauthorized modification or alteration.
Cosmetic damage (scratches, dents, chips, finish damage).
Damage from abuse, misuse, pests, accidents, fire, floods, or other acts of nature.
Damage from incorrect line currents, voltages, fluctuations, and surges.
Damage from failure to properly maintain the product.
Use of the product in a SPA or a room with an outdoor pool invalidates the warranty.