Operational Check

The purpose of the operational check is to confirm that the system operates properly.

CONDITIONS:
^ Engine running and at normal operating temperature.

Check Blower:

PROCEDURE:
1. Check blower
a. Turn fan switch to 1-speed.
Blower should operate on 1-speed.
b. Then turn fan switch to 2-speed, and continue checking blower speed until all speeds are checked.
c. Leave blower on 4-speed.

Check Discharge Air:

2. Check discharge air
a. Press each mode switch.

Check Discharge Air:

b. Confirm that discharge air comes out according to the air distribution table at left, and that the indicator lamp illuminates.
Refer to "Discharge Air Flow." Description and Operation

Check Recirculation:

3. Check recirculation

Check Temperature Decrease:

4. Check temperature decrease
a. Slide temperature control lever to full cold.
b. Check for cold air at discharge air outlets.

Check Temperature Increase:

5. Check temperature increase
a. Slide temperature control lever to full hot.
b. Check for hot air at discharge air outlets.

Check Air Conditioner Switch:

6. Check air conditioner switch
Turn the fan control switch to the desired (1 to 4 speed) position and push the A/C switch to turn ON the air conditioner.
The indicator lamp should come on when air conditioner is ON.