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B22 - checking the blower, Checking the blower, See section b22 – LAARS NeoTherm NTV (Sizes 399-850 MBTU/h) - Service Manual User Manual

Page 51: If power is available at j2, but the blower is, Not running, go to section b22 - “checking the, Blower

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41

Service Manual - NeoTherm 500

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 B26

DHW sensor - Section B27

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 B23

B22

Checking the Blower

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