Cold Start Thermal Switch
Remove thermal switch from thermostat housing. Check switch calibration with 20 in. Hg applied to diaphragms. See Cold Start Thermal Switch Calibration table.
COLD START THERMAL SWITCH CALIBRATION
| Temperature °F (°C) | 1st Stage | 2nd Stage |
|---|---|---|
| Below 45 (7) | OPEN | OPEN |
| 45-68 (7-20) | OPEN | CLOSED |
| Over 20 | CLOSED | CLOSED |