MALFUNCTION 3

TM 9-4120-428-14

0008 00

MALFUNCTION 3

REDUCED HEATING CAPACITY

SYMPTOM

Air conditioner is not heating properly.

MALFUNCTION

The mode selector switch is not properly set.

CORRECTIVE ACTION

Set the switch on LOW or HIGH heat.

The temperature selector switch is not properly operating.

CORRECTIVE ACTION

Set the control to WARMER. If condition improves, adjust properly.

The supply and return louvers are not properly adjusted.

CORRECTIVE ACTION

When necessary, adjust the air louvers to the open position.

Cold, outside air is entering through the fresh air damper.

CORRECTIVE ACTION

Make sure the damper is fully closed. If the condition improves, adjust accordingly.

Check that all doors, windows, and other openings in the room or enclosed space are

tightly closed.

MALFUNCTION 4

TOO MUCH HEAT

SYMPTOM

The air conditioner is dispensing too much heat.

MALFUNCTION

The mode selector switch is not properly set.

CORRECTIVE ACTION

Set the switch on LOW HEAT. (When the MODE SELECTOR switch is set for

HIGH HEAT, half of the heaters will operate ALL of the time).

The TEMPERATURE SELECTOR switch is not operating properly.

CORRECTIVE ACTION

Adjust to a slightly COOLER setting if necessary.

OPERATIONAL CHECKOUT PROCEDURES

Operate the unit per procedures found in WP 0005 00. If the unit fails to operate according to the procedures listed, refer to

troubleshooting section to select an appropriate corrective action. If the malfunction does not fall within the capabilities of

the operator, contact Unit Maintenance.

END OF WORK PACKAGE

0008 00-3