MicroLinks Tech H-CAM Instruções de Operação descarregar pdf (Página 152)

TM 11574A-OI

3-58

(2) No control power.

Step Probable Cause Remedy

1 Circuit breaker or fuse defective. Check for blown fuses IAW WP 3-10b(18)(i).

Replace blown fuse IAW 3-10b(18)(j)

Check for damaged or defective circuit

breaker IAW 3-10b(18)(q).

If circuit breaker is found to be defective,

replace IAW 3-10b(18)(r).

If fault is not corrected proceed to step 2.

2 Control transformer defective. Replace control transformer IAW 3-

10b(18)(g).

If fault is not corrected proceed to step 3.

3 Evaporator fan internal motor protector open. Refer to section 3-10b(12).

If fault is not corrected proceed to step 4.

4 Heat relay defective. Check heat relay IAW 3-10b(18)(e)w.

Replace heat relay IAW 3-10b(18)(e)x.

5 Heater termination switch open. Refer to section 3-10b(11).

If fault is not corrected proceed to step d (3).

(3) Unit will not heat or has insufficient heat.

Step Probable Cause Remedy

1 Heater(s) defective. Refer to section 3-10b(11).

If fault is not corrected proceed to step 2.

2 Heater contactor or coil defective. Replace contactor or coil IAW 3-10b(11)(b).

If fault is not corrected proceed to step 3.

3 Evaporator fan motor(s) defective or rotating

backwards.

Refer to section 3-10b(12).

If fault is not corrected proceed to step 4.

4 Evaporator fan motor contactor defective. Replace evaporator fan motor contactor

IAW 3-10b(11)(b)

If fault is not corrected proceed to step 5.

5 Controller malfunction. Refer to section 3-10b(11)(i).

If fault is not corrected proceed to step 6.

6 Defective wiring. Replace.

If fault is not corrected proceed to step 7.

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MicroLinks Tech H-CAM Instruções de Operação Página 152