Trane Tracer CH530 - Refrigerant Pressure, Oil Pressure, and Approach Diagnostics

CG-SVU02C-E438
Main Processor Diagnostics
Diagnostic Name
Affects
Ta r g e t
Severity Persistence
Active Modes
[Inactive Modes]
Criteria Reset Level
Suction Refrigerant
Pressure Transducer
- Circuit 2
Circuit Immediate
Latch
All Bad Sensor or LLID Remote
Evaporator
Approach Error -
Circuit 1
Circuit Immediate
Latch
Respective circuit
running
The Evaporator approach temperature for the respective
circuit (ELWT - Evap Sat Temp Ckt x) is negative by
10ºF or more, for 1 minute continuously while the circuit
/ compressor is operating. Either the Evap Leaving
Water Temp sensor, or Evap Suction Rfgt Pressure
Transducer Ckt 1 is in error.
Remote
Evaporator
Approach Error -
Circuit 2
Circuit Immediate
Latch
Respective circuit
running
The Evaporator approach temperature for the respective
circuit (ELWT - Evap Sat Temp Ckt x) is negative by
10ºF or more, for 1 minute continuously while the circuit
/ compressor is operating. Either the Evap Leaving
Water Temp sensor, or Evap Suction Rfgt Pressure
Transducer Ckt 2 is in error
Remote
Oil Pressure
Transducer -
Compressor 1A
Circuit Immediate
Latch
All Bad Sensor or LLID Remote
Oil Pressure
Transducer -
Compressor 2A
Circuit Immediate
Latch
All Bad Sensor or LLID Remote
Oil Pressure
System Fault -
Circuit 1
Circuit Immediate Latch
Starter Contactor
Energized [all Stop
modes]
The Intermediate Oil Pressure Transducer for this cprsr
is reading a pressure either above its respective
circuit's Condenser Pressure by 15 Psia or more, or
below its respective Suction Pressure 10 Psia or more
for 30 seconds continuously.
Local
Oil Pressure
System Fault -
Circuit 2
Circuit Immediate Latch
Starter Contactor
Energized [all Stop
modes]
The Intermediate Oil Pressure Transducer for this cprsr
is reading a pressure either above its respective
circuit's Condenser Pressure by 15 Psia or more, or
below its respective Suction Pressure 10 Psia or more
for 30 seconds continuously.
Local
Low Evaporator
Refrigerant
Pressure - Circuit 1
Circuit Immediate Latch
Cprsr Prestart and
Cprsr Energized
a. The Evap Refrig Pressure dropped below 10 Psia just
prior to compressor start (after EXV preposition). b. For
RTUD A/C during early startup period: The Evap Refrig
Pressure fell below the Condenser Pressure ÷ 8,
limited to between 2 and 10 psia. c. For RTWD (or
RTUD, ACFC=none) during early startup period: The
Evap Refrig Pressure fell below 10 Psia. d. For all chiller
types, after early Startup Period expires: The Evap Refrig
Pressure fell below 16 Psia.
(Note: the Startup Period for RTWD is 3 min ; for RTUD
it is between 1 and 5 min for as an inverse function of
the Cond Temp measured at time of circuit startup).
Local