LAARS NeoTherm NTV (Sizes 150–285 MBTU/h) - Service Manual - Manual (Page 88)

78 Service Manual NeoTherm 80 - NeoTherm 285
7. Place the new circuit board in position and replace
the screws.
8. Plug in the two ribbon cable connectors.
9. Plug in connectors X01 and X07.
10. Replace the front panel assembly.
11. Turn on power to the unit.
Removing and Replacing
the Current User Interface (continued)
When to Replace a SOLA Controller
When a technician is troubleshooting a problem with a
NeoTherm unit, because the Honeywell SOLA control-
ler is the most complicated part, it’s tempting to assume
that the controller is causing the problem. Usually the
problem is caused by an input (a sensor or switch), or by
a programming problem.
Don’t automatically assume that every problem is
caused by a bad controller.
Laars uses the same SOLA controller in many different
NeoTherm models. The controllers are programmed dif-
ferently for the different NeoTherm models. The replace-
ment must be programmed at the factory for the specific
model of the NeoTherm unit in which it will be used.
D7
cont.
D8