Trane IntelliPak SCRF 25, Installation, Operation And Maintenance Manual

Page: 111 / 120

SCXF-SVX01Q-EN 111
Category Diagnostic
Controls
Reaction
“Off” or “Close” requests are issued as appropriate to the following functions;
• Compressor staging/chilled water control
• Heat operation
• Supply fan control & proof of operation
• Exhaust fan control & proof of operation
• Exhaust actuator control
• Economizer actuator control
• VFD control
Reset
Required
(PMR) A manual reset is required anytime after the diagnostic is set. The diagnostic can be reset at the HI, Tracer Summit, or by
cycling power to the RTM.
Supply Fan VFD Bypass Enabled
Data used
(module,
packet,
byte, bit)
RTM
Activation
conditions
Supply fan VFD bypass has been activated and supply fan vfd bypass is installed.
Time to
React
10 sec < T < 20 sec
Diagnostic
text
(human
interface
display)
“SUPPLY FAN VFD BYPASS ENABLED”
Actions to
be Initiated
NONE
Reset
The INFO diagnostic is cleared when the supply fan VFD bypass is deactivated.
T
LCI Module Comm Failure
Problem The RTM has lost communication with the LCI.
Check
Check field/unit wiring between RTM and LCI module.
Reason for
Diagnostic
The RTM has lost communication with the LCI module.
Controls
Reaction
All active commands and setpoints provided by Tracer Summit through the LCI will be canceled and/or ignored. And where
Tracer Summit has been designated as setpoint source, local HI default setpoints will be used.
Reset
Required
(PAR) An automatic reset occurs after communication has been restored.
Tracer Communications Failure
Problem LCI has lost communication with Tracer Summit.
Check
Tracer Summit (building control panel) is powered up and running properly. If so, check unit wiring between LCI and Tracer
Summit (building control panel).
Reason for
Diagnostic
The LCI has lost communications with Tracer Summit for > 15 minutes.
Controls
Reaction
All active commands and setpoints provided by Tracer Summit through the LCI will be canceled and/or ignored. And where
Tracer Summit has been designated as the setpoint source, local HI default setpoints are used.
Reset
Require
(PAR) An automatic reset occurs after communication between Tracer Summit and the LCI is restored.
U
D Diia ag gn no ossttiiccss