Question 1

the fan runs but it doesn’t seem to pull air through the front grille very strongly

Accepted Answer

DIAGNOSIS Restricted airflow. The evaporator coil behind the filter is either frozen over or clogged with dust. FIX Unplug the unit. Remove the filter and look through the grille at the aluminum fins. If you see frost or ice, let it thaw completely for 24 hours. If you see dense dust, use a vacuum crevice tool to gently clean the fins. IF THAT DIDN'T WORK If the coil is clean and frost-free, the fan motor might be failing or the fan blade has come loose on the shaft. This requires opening the top cover to inspect. HEADS UP Low airflow will cause the coil to freeze solid. If you see ice, the fix is to thaw it AND find the root cause: dirty filter, low room temp, or low refrigerant.

Question 2

mine is leaking water from the bottom, not from the bucket, just pooling underneath

Accepted Answer

DIAGNOSIS Water is bypassing the internal drain system. The drain hose connection might be loose or the internal drain pan is cracked. FIX First, check the continuous drain hose connection at the back. Ensure the black rubber grommet is seated and the hose is pushed on tightly. If using the hose, make sure it has a straight, downhill run without kinks. IF THAT DIDN'T WORK If connections are good, the internal condensate drain pan has a crack or the drain port is clogged with algae. This requires full disassembly to inspect and clean the plastic pan. It’s a major teardown. HEADS UP Always use the unit on a level, hard floor. On carpet, the base can flex and misalign the internal drain channels, causing leaks.

Question 3

it won’t turn on at all, no lights, nothing on the display, checked the outlet

Accepted Answer

DIAGNOSIS No power reaching the main control board. Likely a failed internal fuse or a bad power cord connection. FIX Unplug it. Check the power cord where it enters the chassis for any damage. Plug it into a different, known-good wall outlet. If still dead, the issue is internal. IF THAT DIDN'T WORK The primary failure point is the 3A 250V fuse on the main PCB. You must disassemble the cabinet to access the board and check it with a multimeter. A blown fuse often means a larger board component failed. HEADS UP This unit has no user-serviceable fuse on the outside. Do not bypass any fuses. You risk fire or shock opening the chassis if not qualified.

Question 4

the bucket is full light is on but the bucket isn’t even half full, it keeps shutting off

Accepted Answer

DIAGNOSIS The float switch in the bucket well is stuck or the bucket isn’t seated perfectly level. FIX Unplug the unit. Remove the bucket. Look inside the empty well. You’ll see a small white plastic float on a hinge. Move it up and down several times by hand. Feel for grit. Clean any debris. Reinsert the bucket firmly until you hear a solid click. IF THAT DIDN'T WORK If the float moves freely, the micro-switch it activates may be faulty. This requires disassembly to access the switch on the chassis. It’s a soldered component on the control board. HEADS UP Always use the original bucket. Generic or other model buckets may not depress the float switch correctly, causing this false alert.

Question 5

it’s making a loud gurgling or bubbling noise constantly, sounds like water is moving inside

Accepted Answer

DIAGNOSIS Normal operation. That’s refrigerant moving through the coils and capillaries inside the sealed system. FIX No fix needed. The sound is more noticeable on larger pint models like the DH70W because they move more refrigerant. It will often change pitch as the cycle starts and stops. IF THAT DIDN'T WORK If the sound becomes a loud hiss or screech, that indicates a refrigerant leak. Unplug the unit immediately. Do not use it. A leak means the sealed system has failed. HEADS UP Do not tilt or move the unit while it’s running. You can force liquid refrigerant into the compressor lines and cause real damage.

Question 6

just got my dh70w, it's running but no water is collecting in the bucket after hours

Accepted Answer

DIAGNOSIS The unit is cooling air but not condensing enough moisture. The room may already be at or below your set humidity, or it’s too cold. FIX First, set the humidity level to ‘Continuous’ mode. Let it run for a full 24 hours. Check that the room temperature is above 65°F. Dehumidifiers need warm, moist air to work. IF THAT DIDN'T WORK If the room is warm and humid but still no water, the compressor may not be kicking on. Listen for a low hum and feel for warm air exhaust. No hum means a sealed system or start component failure. That’s a professional repair. HEADS UP In a dry or cool space, it’s normal for this large unit to collect very little. It’s working as intended, not broken.

Question 7

my honeywell dh70w just shows ‘90’ on the display and won’t start, what is that code?

Accepted Answer

DIAGNOSIS That’s the ‘Humidistat Fault’ error code. The internal humidity sensor or its circuit has a problem. FIX Unplug the unit for one full minute. Plug it back in directly to a wall outlet, not an extension cord. See if 90 clears. If it persists, the main control board is likely bad and needs replacement. IF THAT DIDN'T WORK If unplugging doesn't clear it, you cannot fix this yourself. The sensor is integrated into the control board. You need a new main PCB. Call Honeywell support with your serial number. HEADS UP Do not ignore this code and try to run the unit. It will not dehumidify correctly and could damage the compressor.

Honeywell DH70W 70-Pint Dehumidifier

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