Carrier Air 5 Manual

T-- 298 3-7 3.5.4 Upper Scroll Assembly Removal
a. Remove exterior cover assembly. Refer to paragraph
3.5.1.
b. Remove 4 screws securing upper scroll assembly to
the lower scroll assembly. (See Figure 3-18)
c. Gently pry 4 snap clips open and lift the upper scroll
assembly off of the lower scroll assembly.
d. Reverse above procedure for reassembly.
Screws
4 Places
Snap Clip
4 Places
Figure 3-18 Upper Scroll Assembly
3.5.5 Motor Assembly and Condenser Fan
Removal
a. Remove exterior cover assembly. Refer...

T-- 2983-8
Condenser Fan
Figure 3-22 Condenser Fan Removal
3.5.6 Evaporator Blower Wheel Adjustment or
Removal
a. Remove exterior cover assembly. Refer to Exterior
Cover Assembly Removal instructions 3.5.1
b. Remove control box assembly. Refer to Control Box
Assembly Removal instructions 3.5.3
c. Remove upper scroll assembly. Refer to Upper Scroll
Assembly Removal instructions 3.5.4
d. Loosen motor assembly. Refer to Motor Assembly
Removal instructions 3.5.5.
e. Mark shaft at a point where wheel hub and...

T-- 298 3-9
3.5.8Capacitor Troubleshooting
WARNING
Disconnect power to the AirV unit before
checking the capacitor.
To test capacitor to determine if good, open or shorted,
an ohm meter can be used. To determine a capacitor ’s
capacitance, a capacitor meter is required.
Capacitors showing signs of leaks or bulging should be
replaced immediately.
3.5.9Capacitor Testing and Replacement
Capacitors must be discharged properly before testing.
a. Place a 20,000 ohm, 2 watt resistor across the termi-
nals of...

T-- 2983-10 3.6 SERVICE -- UPPER UNIT -- LOW PROFILE
3.6.1 Exterior Cover Removal
CAUTION
Coil fins are sharp. Use care when removing
the cover form the base pan to avoid per-
sonal injury.
To remove the exterior cover, do the following:
a. Before working on unit place the master switch in the
OFF position and disconnect all electrical power.
b. Remove (8) screws securing the unit cover to the
base pan assembly. See Figure 3-26.
c. Carefully lift the exterior cover off of the unit base pan
assembly.
d....

T-- 298 3-11
Evaporator Coil
Condenser Coil
Figure 3-29 Upper Scroll & Control Box
Cover Removed
3.6.3 Condenser Fan Assembly Removal
To remove condenser fan assembly, do the following:
a. Perform steps outlined in Section 3.6.2.
b. Depress and remove Retaining Ring (See
Figure 3-30).
c. Using both hands, carefully pull up on fan assembly
until it is free of the motor shaft.
d. When replacing the fan assembly make sure the fan
assembly is against the stop on the shaft (See
Figure 3-31)
e. Push back on...

T-- 2983-12 3.6.4 Condenser Motor Removal
To remove condenser fan motor, do the following:
a. Perform steps outlined in Section 3.6.2.
b. Remove (3) 13MM bolts (See Figure 3-31).
c. Remove (3) Grommets. Inspect, replace or reuse.
d. Cut Tie-- Wraps & discard (2 locations). When re-
assembling, tie-- wrap at same 2 locations.
e. Remove ground wire from compressor bracket (See
Figure 3-33).
f. Un-- plug (yellow/brown/white) from control box as-
sembly.
g. Reverse above procedure for reassembly.
Cond....

T-- 298 3-13 NOTE
When reassembling the blower wheel on to
the motor shaft ensure that the blower
wheel is flush with the end of the motor
shaft(SeeFigure 3-36).
h. Reverse above procedure for reassembly.
Wheel Flush With Motor Shaft
Figure 3-36 Evaporator Blower Wheel
(Flush With End Of Motor Shaft)NOTE
When placing the evaporator motor/blower
assembly back into the lower scroll assem-
bly cradle, make sure that the assembly is
seated securely in the cradle.
(See Figure 3-35).
3.6.6 Compressor...

T-- 2983-14 a. Remove the batteries from the remote control.
b. Carefully remove the remote cover by inserting a nar-
row flat object between the cover and remote body
and prying apart.
c. Remove the brass screw holding the PCB in place.
d. Carefully remove the PCB board from the remote
body, making sure the battery springs release from
their holders.
e. Locate FR9 on the PCB board (see Figure 3-39).f. Carefully cut the FR9 jumper wire.
g. Reverse above procedure for reassembly.
CAUTION
When re--...

T-- 298 3-15 3.7 THERMOSTAT INSTALLATION AND START --
UP INSTRUCTIONS (WALL MOUNTED)
3.7.1 Introduction
The thermostat is a wall mounted, low-- voltage
thermostat which maintains room temperature by
controlling the operation of a heating and air
conditioningsystem. Batteriesare not required;
temperature and mode settings are preserved with the
power off.
CAUTION
Improper wiring or installation may damage
thermostat. Wiring must conform to local
and national electrical codes.
WARNING
Before installing...

T-- 2983-16 NOTE
If the FAN button is pressed again or if no button
is pressed for two minutes, the thermostat will
exit the configuration mode and return to nor-
mal operation. To re-- enter the configuration
mode, the FAN button must be pressed and
held for 10 seconds again.
While in the configuration mode, the following options
are available:
A. ANTICIPATOR -- Value Adjustment
This adjustment controls the sensitivity and cycle rate of
the thermostst. Higher numbers decrease the
sensitivity and slow...