Trane CVRC-M-1D, Руководство пользователя

Страница: 99 / 126

CVRC-M-1D 99
Diagnostics Tables
Cond Entering Wtr Temp Sensor IFW All Open or Short Check Sensor, Wiring
and Connections
Cond Leaving Wtr Temp Sensor IFW All Open or Short. Check Sensor, Wiring
and Connections
Condenser Rfgt Pressure Sensor MMR All Open or Short.
Must Hold on open AND short input is 2.0 Psia.
Design: Both opens and shorts result in the pressure going to
the low end of the scale. Therefore a Must Hold on the high
pressure end is not required. Check Sensor, Wiring
and Connections
Condenser Rfgt Temp Sensor MMR All Open or Short Check Sensor, Wiring
and Connections
Condenser Water Flow Lost MAR Start and All
Run Modes The condenser water flow switch input was open for more than
6-10 contiguous seconds. Check Pumps, Valves
and Connections
Condenser Water Flow Overdue MMR Estab. Cond
Water Flow Condenser water flow was not proven within 4.25 minutes of the
condenser pump relay being energized. Check Pumps, Valves
and Connections
Cprsr did not Accelerate Fully MMR Starting a. Using either a Solid State Starter or an Adaptive Frequency
Drive, the UCM did not receive an Up to Speed or At Speed
Signal within the Maximum Acceleration Timer Setting. Check End of Limt/At
Speed Input
Cprsr did not Accelerate:
Shutdown MMR Start Mode a. The compressor did not come up to speed in the allotted time
defined by the Maximum Acceleration Timer.
b. The Clear Language Display setups defined “Shutdown” as
the action when the Maximum Acceleration Timer was
exceeded. Check Main Power
Supply and Wiring
Cprsr did not Accelerate:
Transition
(The Motor is put across the line) IFW Start Mode a. The compressor did not come up to speed in the allotted time
defined by the Maximum Acceleration Timer.
b. The Clear Language Display setups defined “Transition” as
the action when the Maximum Acceleration Timer was
exceeded. See Troubleshooting
Service Bulletin
CVHE-SB-32
Current Overload MMR All Running
Modes Motor current exceeded overload time Vs trip characteristic. Check Main Power
Supply
& Wiring
Current Overload Setpts Error IFW All The redundant overload settings did not agree for 30 contiguous
seconds. (Continue to use the previous value for the 30 second
timeout.) When this diagnostic occurs the affected Starter
Module shall use the minimum (00000 binary, 00 decimal)
overload setting as a default until either the UCM is reset or, if
the redundant settings agree again, the starter module can go
back to using the actual setting. Review Overload Set
Up
Diagnostic Description Diag
Type
Diag. Active
Modes
(Non-Active
Modes)
Cause Help Message