Nordyne E2EB 010H, Руководство по обслуживанию, Страница: 9 / 28

9 E2 Service Manual
sequencer. The blower will run during the heating
cycle of the furnace. When the switch is in the “fan”
position the blower will run continuously. See Figure
8 for air circulation switch.
Figure 10. Capacitor
Capacitor(See Figure 10):
1. Shut off the electrical supply to the unit.
2. Disconnect he electrical leads to the capacitor.
3. Discharge the capacitor using a 1500 ohm resister.
4. Check the capacitor using a capacitor tester.
Blower Motor (See Figure 11):
1. Shut power off to the furnace.
2. Disconnect the electrical motor leads.
3. Using an ohmmeter, check for continuity from each
terminal to the shell of the motor, if there is continuity,
the motor is grounded and should be replaced.
4. Using the ohmmeter, check the resistance across
the motor leads. See diagrams below. Note: the
higher the speed the lower the resistance of the
motor winding.
Figure 11. Blower
Figure 9. Fan Switch Shematic
Figure 12. Motor Schematic
Checking the Air Circulator Selector Switch
To check the air circulator switch shut of all power to the
furnace. Remove wires from air circulator selector
switch terminals. Check continuity of terminals with the
switch in “on” and “auto” position. See Figure 9 for fan
switch schematic.
Air Circulator Motor
The circulator motor and blower wheel combination
move air across the heating elements to supply the
duct system with warm air.
To check the motor, be certain the capacitor is
functional.
1
Black
2
Red*
3
Yellow
* Yellow on E2EH 015, 017, 020, 023