Carrier 38EV024320 User Manual
Page 35
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INDOOR BLOWER FAILURE
f V Reference Figure 29
Notes;
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2
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3)
4)
5)
6
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On some models, removal of blower housing is required to determine if wheel is rubbing.
Refer to indoor unit installation instructions for service and repiacement procedures:
For fan coiis without eiectric heat, piace (2) jumpers at Interface board from L1 to C, and L2 to 1 (or 2).
If Neither Speed or On-Off signals are present, wait longer and recheck, as it could take 2-3 minutes for blower to start in
some cases, ■
if biower starts, break power, remove jumper and place between R and W2(or W). Reset power and check to see that
electric or gas heat operate. If not, refer to “Electric/Gas Heat Failure.”
Voltage at C and 1 (or2) may also be read by removing interface box cover and reading at solder joint connections on
board.
A87469