Service Mode Menu (Local Human Interface Only) - Trane S*HF*20-75 Troubleshooting Manual

SERVICE MODE Menu (Local Human Interface only)

The SERVICE MODE menu is used to input operating parameters for unit operation during a service test. Depending on
the particular test being conducted, the user will cycle through all unit outputs (compressors, fans, dampers, heaters, etc.)
and selectively turn them "On" or "Off" for the test. After designating the operating status for each unit component, the
operator will designate the "TEST START" delay time.
When a service mode screen is displayed for 30 minutes without a key being pressed, the LCD screen will revert to the
general operating status display. If this happens, press the Service Mode key again to return to the service menu.
Notes:
1. All "Factory Peristalses are either OFF, CLOSED, or 0% unless otherwise stated.
2. Many of the screens displayed in this section are applicable only for the options that are installed in the unit and may
not be visible on your unit.
Modifying Selections:
appropriate keys to navigate (Next and Previous) and make changes (+ and -) to the selections. Once the selection has been
changed to the desired value, the user has the following options to either Cancel or Accept the pending change:
• To Cancel, press the Cancel key to remove the change, the display will revert to the original value.
• To Accept, press the Enter key to confirm the new choice.
To operate the system in the TEST MODE, press the Service Mode key to enter into the service mode menu and scroll
through all of the system outputs and selectively turn them "On" or "Off". After the outputs are set, press the Test Start
key.
NOTICE
Compressor Failure!
Unit must be powered and crankcase heaters energized at least 8 hours BEFORE compressors are started. This will
protect the compressors from premature failure.
TOP LEVEL SERVICE MODE SCREEN
Note: One of the three following screens will be shown based on
supply air pressure options.
Supply Air Controls
Supply Fan OFF
Supply Air Controls
Supply Fan OFF
RT-SVP07B-EN
Starting with the first service test screen program the necessary information by using the
OR
IGV/VFD Cmd
OR
Used With: CVDA or CVZT Units, w/o
Return Fan Option
Possible Values: ON, OFF, AUTO
Used With: VVDA or VVZT Units w/o
Return Fan Option
35%
Possible Values:
Fan: ON, OFF, AUTO
IGV/VFD Cmd: 0 to 100 %
105