Indoor Fan Motor Voltage Check; Replacing The Blower Motor - Haier 2U18MS2VHB Service Manual

Ductless multi-split heat pump, outdoor/indoor, wall mount - highwall, 2'x2' compact cassette, 3'x3' large cassette, slim duct, mid-static ducted, medium static ducted, console
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Indoor Fan Motor Voltage Check

If The Indoor Fan Motor Does Not Run:
1. Remove the front cover and access the circuit board fan motor
connection.
2. Reset power and turn the remote control fan command to Fan
On mode.
Motor Test:
1. If the motor doesn't run, check for 310VDC between Pins 1
and 3. If it is not present, the indoor board is bad. If voltage
is present, continue on.
2. Check the voltage between Pins 3 and 4. The voltage
should be +15VDC. If it is not present, the board is bad. If
voltage is present, continue on.
3. Check for voltage between Pins 3 and 6. If no DC voltage is
present, the board is bad. If voltage is present, change the
motor.

Replacing the Blower Motor

1. Disconnect the power.
2. With the indoor unit cover removed, remove the two
screws on the left plastic evaporator coil bracket.
3. Remove the cover from the electrical box on the right side
of the indoor unit.
C-6
Testing
4. Remove the two screws that hold the electrical box in
5. Lift and swing the electrical box out of the way.
WALL MOUNT TECHNICAL OVERVIEW
Red
Black
White
DC Motor
Yellow
Blue
1
3
place.
+310 VDC
DC Ground
+15 VDC
Signal
Feedback
2

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