Troubleshooting Guide - Air King AK80H Operating Manual

2. For proper operation the humidity sensing fan will require a 3 way switch (not included).
Run wiring between the fan and the switch location. Make sure you leave enough wiring
in each box to make the connections. At the switch box connect the Black wire from
the house to the common terminal of the switch. Connect the black wire from the fan to
one of the switched terminals on the switch. This position will energize the automatic
mode and the fan will energize upon a rise in humidity. Connect the Red wire from the
fan to the other switched terminal on the switch. This position will activate the Manual
On feature and energize the fan. Properly connect the ground and neutral (if applicable)
mount the switch and the cover.
3. From where you have chosen to access the fan's junction box, connect the white wire
from the house to the white wire from the fan. Connect the wire from the automatic
position on the wall switch to the black wire from the fan, connect the wire from the
manual On position on the switch to the red wire from the fan. Connect the ground
wire from the house to the green wire from the fan housing (Figure 8). Use approved
methods for all connections.
Supply from house
Ground
Figure 8
NOTE: The fan's receptacle wires might need to be pulled outside compartment for connection.
Only pull the three loose wires outside of compartment. Additional wires will be present.
4. Carefully tuck wire back inside wire compartment and replace wire compartment cover
securing with the screw that was removed earlier.
SECTION 6
Completing the Installation
1. If the fan's blower assembly was removed during the wiring process, reinstall the
blower by reversing the directions in Section 5 (Wiring), Step 1b.
2. Connect the wire harness by plugging the 3 pin quick connect end into the receptacle
located on the side of the wire compartment cover. Confirm that the 5 pin quick connect
end is plugged into the receptacle from the blower assembly. These cords will only fit
one way into the receptacles (Figure 9).
Figure 9
Trouble
1. Fan does not operate when the switch is on.
2. Fan is operating, but air moves slower than normal.
3. Fan is operating louder than normal
6728019 Rev. C 1-13
White
Hot (Black)
Red

Troubleshooting Guide

Probable Cause
1a. A fuse may be blown or a circuit tripped.
1b. Connector plug from motor is not plugged in. 1b.
1c. Wiring is not connected properly.
1d Motor has stopped operating.
2. Obstruction in the exhaust ducting.
3a. Motor is loose.
3b. Fan blade is hitting housing of unit.
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3. Install the grill by squeezing the two ends of the springs together and installing them up
into the slots on the fan's housing. Push the grill up into position (Figure 10).
Figure 10
4. Restore power and test your installation.
SECTION 7
Setting the Humidistat
This fan is equipped with a humidity sensor that automatically turns the fan on when humidity
is above set point and off when humidity is at or below set point. If the fan is operating too
long or not enough, first check to see the humidity sensor set point. In cases where the
ambient humidity level of the room rises higher than the preset level, the fan will turn on even
if the room is not occupied. This helps prevent conditions that lead to mold growth.
CAUTION: MAKE SURE POWER IS SWITCHED OFF AT SERVICE PANEL BEFORE
SERVICING THE UNIT.
1. To set the desired humidity level of the room, remove the grill and locate the
dehumidistat dial located on the wire compartment cover.
2. Set the dial to the relative humidity you want the fan to maintain usually between 50 &
80%. Moist climates will require higher settings than dry climates. When the humidity
level of the room is below this setting the fan will remain off. When the humidity level
rises about this setting the fan will turn on and run until the humidity level falls below
this setting.
3. Reinstall the grill and restore power.
SECTION 8
Use and Care
CAUTION:
MAKE SURE POWER IS SWITCHED OFF AT SERVICE PANEL BEFORE
SERVICING THE UNIT.
1. Cleaning the Grill: Remove grill and use a mild detergent, such as dishwashing liquid,
and dry with a soft cloth. NEVER USE ANY ABRASIVE PADS OR SCOURING POWDERS.
Completely dry grill before reinstalling. Refer to instructions in Section 5 Finishing the
Installation, to reinstall grill.
2. Cleaning the Fan Assembly: Wipe all parts with a dry cloth or gently vacuum the fan.
NEVER IMMERSE ELECTRICAL PARTS IN WATER.
Suggested Remedy
1a. Replace fuse or reset circuit breaker.
Turn off power to unit. Remove Grill and plug motor into receptacle
in housing. Restore power to unit.
1c. Turn off power to unit. Check that all wires are connected.
1d. Replace motor.
2. Check for any obstructions in the ducting. The most common are bird
nests in the roof cap or wall cap where the fan exhausts to the outside.
3a. Turn off power to unit. Remove grill and check that all screws are fully
tightened. Restore power to unit.
3b. Call your dealer for service.
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