Trane RTHD series - Diagnostics Table Entries

Diagnostics
RTHD-SVX02H-EN 117
Table 35. Diagnostics Table
Hex
Code
Diagnostic Name
and Source
Severity Persistence Criteria Reset
Level
1A0 Power Loss Immediate NonLatch The compressor had previously established currents while running
and then all three phases of current were lost. Design: Less than
10% RLA, trip in 2.64 seconds. This diagnostic will preclude the
Phase Loss Diagnostic and the Transition Complete Input Opened
Diagnostic from being called out. To prevent this diagnostic from
occurring with the intended disconnect of main power, the mini-
mum time to trip must be greater than the guaranteed reset time
of the Starter module. Note: This diagnostic prevents nuisance
latching diagnostics due to a momentary power loss - It does not
protect motor/compressor from uncontrolled power reapplication.
See Momentary Power Loss Diagnostic for this protection. This
diagnostic will auto reset in 10 seconds from its occurrence, and
is not active during the start mode before the transition com-
plete input is proven. This prevents the chiller from cycling due
to some internal starter problem, as the starter would latch out
on either a “Starter Fault Type 3” or a “Starter Did Not Transition”
latching diagnostic. However true power loss occurring during
a start would result in a misdiagnosis and the chiller would not
automatically recover.
Remote
2F2 Refrigerant Monitor
Sensor
Info NonLatch Open or Shorted input and the Rfgt Monitor is setup as installed Remote
28C Restart Inhibit Warn-
ing
Info NonLatch The Restart Inhibit was invoked on a compressor. This indicates
excessive chiller cycling which should be corrected.
Remote
189 Solid State Starter
Fault
Immediate Latch The Solid State Starter Fault Relay is open Local
188 Starter Dry Run Test Immediate Latch While in the Starter Dry Run Mode either 50 % Line Voltage was
sensed at the Potential Transformers or 10 % RLA Current was
sensed at the Current Transformers.
Local
5CD Starter Comm Loss
with MP
Immediate Latch Starter has had a loss of communication with the MP for a 15
second period.
Local
CA Starter Contactor
Interrupt Failure
Immediateand
Special Mode-
Actio n
Latch Detected compressor currents greater than 10% RLA on any or
all phases when the compressor was commanded off. Detection
time shall be 5 seconds minimum and 10 seconds maximum. On
detection and until the controller is manually reset: generate di-
agnostic, energize the appropriate alarm relay, continue to ener-
gize the Evap and Cond Pump Outputs, continue to command the
affected compressor off, fully unload the effected compressor. For
as long as current continues, perform liquid level and oil return
gas pump control
Local
F0 Starter Did Not Tran-
sition
Immediate Latch The Starter Module did not receive a transition complete sig-
nal in the designated time from its command to transition. The
must hold time from the Starter Module transition command is
1 second. The Must trip time from the transition command is 6
seconds. Actual design is 2.5 seconds. This diagnostic is active
only for Y-Delta, Auto-Transformer, Primary Reactor, and X-Line
Starters.
Local
6A3 Starter Failed to
Arm/Start
Info Latch Starter failed to arm or start within the allotted time (15 sec-
onds).
Remote
1E9 Starter Fault Type I Immediate Latch This is a specic starter test where 1M(1K1) is closed rst and a
check is made to ensure that there are no currents detected by
the CT’s. If currents are detected when only 1M is closed rst at
start, then one of the other contactors is shorted.
Local
1ED Starter Fault Type II Immediate Latch a. This is a specic starter test where the Shorting Contactor (1K3)
is individually energized and a check is made to ensure that there
are no currents detected by the CT’s. If current is detected when
only S is energized at Start, then 1M is shorted. b. This test in a.
above applies to all forms of starters (Note: It is understood that
many starters do not connect to the Shorting Contactor.).
Local
1F1 Starter Fault Type III Immediate Latch As part of the normal start sequence to apply power to the
compressor, the Shorting Contactor (1K3) and then the Main
Contactor (1K1) were energized. 1.6 seconds later there were no
currents detected by the CT’s for the last 1.2 seconds on all three
phases. The test above applies to all forms of starters except
Adaptive Frequency Drives.
Local
5C5 Starter Module Mem-
ory Error Type 1
Info Latch Checksum on RAM copy of the Starter LLID conguration failed.
Conguration recalled from EEPROM.
Local
5C9 Starter Module Mem-
ory Error Type 2 -
Immediate Latch Checksum on EEPROM copy of the Starter LLID conguration
failed. Factor default values used.
Local