Bryant 453 Instrucciones de operaciones descargar pdf (Pagina 17)

8. Check for 120 Volts at each

terminal to ground of the com-

bination control as illustrated

in Figures 3.37 and 3.38. Nor-

mal readings should show 120

Volts on both terminals.

9. If there is 0 Volts on both ter-

minals, check wiring connec-

tions. If there is 120 Volts on

only one terminal, replace the

Combination Control. If unit is

a 2-Way, skip to Step 12.

10. Check for 120 Volts at Point 1

and ground and Point 2 and

ground of switch as shown in

Figure 3.35 (AC-ELEC STDBY-

DC switch is now set at AC).

11. There should be 120 Volts at

both Points 1 and 2. If not, and

connections are checked as

proper, replace AC-ELEC

STDBY-DC switch.

12. Check for 120 Volts AC at your

heater element connection as

shown in Figure 3.39.

13. If no voltage is present and the

preceding checks have been

made, then most likely there is

a loose wire connection be-

tween the combination control

and the heater element con-

nection at terminal block.

14. The last check to make is for

continuity on AC heater ele-

ment leads as shown in Fig-

ure 3.40.

15. With the Volt-Ohm meter set to

the Rx1 scale, check the resis-

tance of the heater (Figure

3.40 A). The resistance should

be as shown:

170W* 71 OHMS

300W 41 OHMS

200W 61 OHMS

These readings are acceptable +

or - 5%

Set volt-ohm meter to the Rx10

scale or higher and check the

heater element for a short to

ground. The meter should show no

movement.

*Early Version

B101

Chassis

Ground

Figure 3.37 120 Volt Check of Combination Control Switch

Chassis

Ground

Figure 3.38 120 Volt Check of Combination Control Switch

Figure 3.39 120 Volt Check at Heater Connections

Figure 3.40 Heater Resistance Check

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