DriSteem Vapor-logic3 Operations Instructions download pdf (Page 36)

Operation

Diagnostics

The Diagnostics screen enables you to troubleshoot

some of the hardware input and output points of the

VAPOR-LOGIC

control system. The soft keys Next

and Back are used to move through the diagnostic

options. Once you have found the item you would

like to troubleshoot, view the reading and compare it

with what the value should be.

For example, if you were going to troubleshoot the

RH signal input, you would select RH Signal on the

Diagnostics screen. The display would then tell you

what the current input signal is in mA. It would also

tell you what this voltage translates to in terms of

relative humidity. You can then verify that the input is

working correctly.

Main menu: 5) Diagnostics.

Operation:

Main menu: 5) Diagnostics

Depending on system options and type, diagnostics

available may include:

• RH input

• Demand input

• Dewpoint input

• Duct HL input

• Temp comp input

• High probe voltage

• Mid probe voltage

• Low probe voltage

• DI float

• Tank temp input

• Air flow switch

• Safety interlock

• Blower #1 RPM

• Blower #2 RPM

• Burner #1 gas valve

• Burner #2 gas valve

• Combustion air switch

• Power vent switch

• Flue differential pressure switch

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DriSteem Vapor-logic3 Operations Instructions Page 36