CSR-20 & CSR-40, September 1999
µP-D Controller Menu Test Functions 4-27
Menu Test Functions
WARNING: Activating some tests in the Menu Test
section of the controller menu causes the unit com-
pressor and fan motors to start and operate.
The Test Menu allows technicians to perform specific diagnos-
tic tests on the unit including:
• Electrical [ELECT]: Check the main supply power volt-
age and frequency; or check the ac current draw of the
heaters, motors or unit during Full Cool, Modulation 50%,
Modulation 100%, Heat and Defrost.
• Refrigeration [REFRG]: Perform system diagnostics and
check supply and return air temperatures during each unit
operating mode.
• Controller [CNTRL]: Perform individual control circuit
diagnostics on controller outputs. Valves, solenoids and
contactors can be energized without operating the unit or
starting the related component (e.g. motor).
• Generator [GEN]: Check the main supply power voltage
and frequency provided by a genset while the unit is in
Full Cool.
MENU TEST Screen Flow Diagram (See Display Acronym Definitions on pages 4-4 to 4-6)
To Next Page
Loading...
Need help?
General
