1. Instruction plate
6. Warning Light
2. Heater control box
7. Fuel shutoff valve
3. Louver handle
8. Heater toggle switch
4. Reset button
9. Heater power cable
5. Indicator light
10. Thermostat cable
Figure 2-29. Heater Controls (Hunter).
Warning light. The warning light (6) is a red light located on the upper right-hand corner of the control box
(2). It comes on automatically when heater fails to start or run due to lack of fuel or ignition.
Heater toggle switch. The toggle switch (8, fig. 2-29) is located on the left-hand side of the control box (2).
The toggle switch controls heating, ventilating, and stopping.