Troubleshooting - U-Line THINAIR H-7860 Manual

OPERATING ISSUE
Dryer does not turn on.
Dryer does not shut off.
Dryer heats up but no
air comes out.
Dryer does not always
turn on or turns on by
itself.
Dryer blows only
cold air.
Dryer has a loss of
air volume.
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TROUBLESHOOTING

1. Check power to unit and connections. Verify dryer is receiving voltage at
terminal block.
2. Check RED service LED light for the following:
A. Light is ON: Place hands under sensor. If light stays on, then replace
sensor. If light goes off, check to make sure wiring is correct at dryer
control. If OK, check motor fuse, if so equipped, and wire connecting to
motor. If both are OK, replace motor.
B. Light is OFF: Check for loose, disconnected or improper wiring at dryer
control (see wiring schematic affixed to blower housing) or replace dryer
control.
C. Light is FLASHING: Dryer is in lockout mode (adjust sensor range) or
pre-filter is clogged:
• If dryer will not turn on, stays on or stops working, it may be mounted
too close to a counter or object and has gone into lockout.
• If relocating appliance is not possible, adjust the range of the sensor
by turning off power to dryer. Then turn the range adjustment on the
control board counterclockwise towards L (-) low to decrease sensor range.
(See Adjusting the Heat Output, Motor Speed and Sensor Range, above)
• Remove and clean pre-filter.
May be mounted too close to a counter or object (adjust sensor range,
see above).
Check for loose, disconnected or improper wiring at dryer control (refer to
wiring schematic affixed to blower housing).
Replace dryer control.
Check wire connection to motor.
Replace motor.
May be mounted too close to counter or object (adjust sensor range,
see above).
Check for foreign material on optical sensor next to air outlet.
Check for loose wires on dryer control.
Replace dryer control.
Check heat setting on control.
Check for loose connections to heating element.
Replace heating element.
Check pre-filter for lint buildup. Clean by removing pre-filter and rinse in warm
water.
Dry completely before reinstalling.
Check for slow running motor or burning smell. If so, replace motor.
Check motor speed setting.
RECOMMENDATIONS
0121 IH-7860