Table 2. Auxiliary Arctic Heater Troubleshooting Procedures.

TM 9-2320-312-10

TROUBLESHOOTING PROCEDURES - CONTINUED

0010 00

Table 1. Air System and Brakes Troubleshooting Procedures - Continued.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

4. Trailer Brakes Will Not Release.

1. Check position of trailer brake

Move lever up to OFF position.

hand control valve lever on

instrument panel.

2. Check position of trailer air

Push knob in (ON).

supply control knob.

3. Check intervehicular air hoses

Connect air hoses.

for proper connections.

4. Notify Unit Maintenance.

Table 2. Auxiliary Arctic Heater Troubleshooting Procedures.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

NOTE

The 7-day timer has a fault code retrieval device built into the unit. This function automatically activates if

heater is experiencing problems. Fault codes appear in 3-digit format on the LCD display screen. Fault code

000 indicates normal operation.

Operator troubleshooting is limited. If any fault code other than 000 appears, check for the following:

Is battery disconnect switch in OFF position? If so, place in ON position.

Is there adequate fuel in fuel tank? If not, refuel (WP 0013 00).

Is vehicle heater set to maximum temperature setting? If not, set to maximum setting (Refer

to Operate Heater in WP 0005 00).

Is circuit breaker located on front of auxiliary arctic heater unit tripped? If tripped, press to

reset.

If fault code remains, notify Unit Maintenance.