Operating instructions

1. Pull th e leads off the temperatu re

limiter.

2. Check the continuity of the tem-

perature limiter with a multimeter.

3. Remove the faulty temperature lim-

iter.

4. Coat the replacement temperature

limiter with heat conducting paste

and install.

5. After commissioning, press reset

button "E" on the control uni t.

Checking and replacing the differential pressure sensor

In case of fault m essages concerning the differential pressure sensor, check the

sensor for:

Correct installation

Electrical connectio n

Correct position of th e O-rings inside the a daptor

Plugs in te st nipple s

Replace the sen sor if fault message s persist.

Repairs (cont.)

Troubleshooting

5692 619 GB