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B18 - checking the blower, Checking the blower, See section b18 – LAARS NeoTherm NTV (Sizes 150–285 MBTU/h) - Service Manual User Manual

Page 46: If power is available at j2, but the blower is, Not running, go to section b18 - “checking the, Blower

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36

Service Manual NeoTherm 80 - NeoTherm 285

Checking the Blower

B18

Yes

Blower goes

to full speed?

Replace the SOLA controller

See Section D8, D9.

Unplug J2. This is the

control signal to the blower.

No

Yes

Check wiring

harness. Wires

OK?

No

Replace wire harness

No

Has call for heat?

At start of test, unit should be ready to run (”Standby”)

Blower runs

Problem with temp. sensor(s)

System sensor - Section B22

DHW sensor - Section B23

Short contacts

for call for heat:

CH: TB7 5-6

DHW: TB6 5-6

Blower does not run

Bad blower. Replace the blower.

See Section B19.

This manual is related to the following products:
See also other documents in the category LAARS Water boiler: