HFS-6 manual?

[Richard L]

Originally Posted by airboy

The car owner informed me that, from his description, the low level fail safe tripped (level light) even after he removed the subwoofer box from the trunk. If the wires from the Spec-C tank level sensor does not have a good connection (intermittent open) would it trip the fail-safe. I don't know if the sensor is "normally closed" or "normally open".

The sensor is:
- Open circuit when the arm is up (full).
- Cloce circuit when the arm is down (empty).

Two possibilities:
- The activation is not due to tank level but SC, WL and WH calibration, lasts about 4 seconds
- Activation due to tank level last abiout few tenths of second

If the level light flickers, it is due to the water surge of the Spec C tank (most likely) - please find out from your customer, which is which.