Possible Cause | Possible Solution |
Incorrect wiring | Correct the wiring. |
| The fuse is open or blown. | Check why the fuse was blown and repair any problems. Replace the fuse. |
| The variable stage is configured as OFF | Configure the variable stage for cooling. |
The idle speed setting is
too low. | Increase the idle speed
setting |
| The off at temperature setting is too high. | Decrease the off at temperature setting. |
The temperature set point
is above room temperature. | Adjust the temperature set
point to the desired temperature. |
There is no power to the
fan. | Switch on the power. |
Faulty fan/heater | Replace the equipment. |
Circuit breaker open | Reset the breaker. |
The minimum idle speed is too high. | Decrease the minimum idle speed setting. |
The on full at setting is the same as the temperature set point. | Adjust the temperature set point to the desired temperature. |
Incorrect motor curve | Configure the stage to use the other motor curve. |