Error Code HS

Humidity sensor failure

Also displayed as: HS

How to Fix

1. 1

   Disconnect power and discharge capacitors by contacting metal plug of power cord to ground line.

2. 2

   Remove the NA6 connector from the controller.

3. 3

   Short Pin 2 (Orange Wire) and Pin 5 (Blue Wire) of the NA6 6-pin connector together with a metal jumper.

4. 4

   Measure resistance of the electrode (electro load) with sensor exposed; expect less than 1 Ω continuity.

5. 5

   If resistance is above 1 Ω, check electrode and harness connector; check harness linking connector.

6. 6

   Wet a cloth and contact it to the electrode sensor; during diagnostic test, display value should be in range 50–130 (70%–40% IMC).

7. 7

   Measure DC voltage between NA6 Pin 2 (Orange) and Pin 5 (Blue) with damp cloth on sensor; expect approximately 2.5V DC for damp-wet condition.

8. 8

   If voltage and display values are normal, replace the controller.

9. 9

   If voltage or values are abnormal, replace the electrode sensor and recheck.