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0621 TH-6621
1-800-295-5510
uline.com
H-6621
INDUSTRIAL DEHUMIDIFIER
OPERATING ISSUE
CAUSES
RECOMMENDATIONS
The unit is not working.
The breaker tripped.
The unit is plugged into a GFI protected
circuit.
The unit is being run from a generator.
The extension cord is not the correct
gauge for the distance run.
(14 AWG up to 25' and 12 AWG over 25')
Reset breaker.
Remove from area. Excessive moisture will trip GFI.
Check output does not fluctuate, as the unit will
not operate at low voltage.
Verify voltage while unit is starting. Start up will
cause the highest current draw and largest
voltage drop. Even if plugged directly to outlet,
there can be a significant voltage drop. Never
assume the voltage is okay without verifying.
The unit shuts down and displays
an error code.
ER 1: Overflow switch remaining closed
for over two minutes.
Plugged or kinked drain hose.
Bad connection in pump circuit.
Defective condensate pump.
ER 2: Internal pressure switch indicates
refrigerant pressure is too high.
Air filter is dirty or plugged.
The coil is dirty.
Loose or faulty electrical connections
to pressure switch.
Fan is not working.
Defective pressure switch.
Remove obstruction.
Check connections.
Replace pump.
Clean or replace air filter.
Clean coil.
Check connections.
Replace fan.
Replace pressure switch.
TROUBLESHOOTING
Para Español, vea páginas 3-4.
Pour le français, consulter les pages 5-6.
