Diagnostics - Trane AdaptiR RTHD Installation Operation & Maintenance

Diagnostics

The following diagnostic Table contains all the diagnostics possible. Not all data is available un-
less Trace TU is installed.
Hex Code: 3 digit hexadecimal code used on all past products to uniquely identify diagnostics.
Diagnostic Name and Source: Name of diagnostic and its source. Note that this is the exact text
used in the User Interface and/or Service Tool displays.
Severity: Defines the severity of the above effect. Immediate means immediate shutdown of the
effected portion, Normal means normal or friendly shutdown of the effected portion, Special
Mode means a special mode of operation (limp along) is invoked, but without shutdown, and
Info means an Informational Note or Warning is generated.
Persistence: Defines whether or not the diagnostic and its effects are to be manually reset
(Latched), or can be either manually or automatically reset (Nonlatched).
Criteria: Quantitatively defines the criteria used in generating the diagnostic and, if nonlatching,
the criteria for auto reset. If more explanation is necessary a hot link to the Functional Specifica-
tion is used.
Reset Level: Defines the lowest level of manual diagnostic reset command which can clear the
diagnostic. The manual diagnostic reset levels in order of
Priority are: Local and Remote. A diagnostic that has a reset level of Local, can only be reset by a
local diagnostic reset command, but not by the lower priority remote Reset command whereas a
diagnostic listed as Remote reset can be reset by either.
Table 37. Diagnostics Table
Hex Diagnostic Name
Code and Source
E5 Phase Reversal
188 Starter Dry Run Test
E4 Phase Loss
E2 Momentary Power
Loss
1A0 Power Loss
E3 Severe Current Im-
balance
126
Severity Persistence
Immediate Latch
Immediate Latch
Immediate Latch
Immediate Nonlatch
Immediate NonLatch
Normal Latch
Criteria
A phase reversal was detected on the incoming current. On a
compressor startup the phase reversal logic must detect and trip
in a maximum of 0.3 second from compressor start.
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.
a) No current was sensed on one or two of the current transform-
er inputs while running or starting (See Nonlatching Power Loss
Diagnostic for all three phases lost while running). Must hold =
20% RLA. Must trip = 5% RLA. Time to trip shall be longer than
guaranteed reset on Starter Module at a minimum, 3 seconds
maximum. Actual design trippoint is 10%. The actual design trip
time is 2.64 seconds. b) If Phase reversal protection is enabled
and current is not sensed on one or more current xformer inputs.
Logic will detect and trip in a maximum of 0.3 second from com-
pressor start.
Momentary Power Loss option disabled: No effect.Momentary
Power Loss option enabled: A loss of power on three line cycles
or more was detected. Diagnostic is reset in 30 seconds.
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 complete
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.
A 30% current imbalance has been detected on one phase rela-
tive to the average of all 3 phases for 90 continuous seconds.
Reset
Level
Local
Local
Local
Remote
Remote
Local
RTHD-SVX04K-EN