Diagnostics
11 6 RTHD-SVX02H-EN
Table 35. Diagnostics Table
Hex
Code
Diagnostic Name
and Source
Severity Persistence Criteria Reset
Level
1AD MP Application Mem-
ory CRC Error
Immediate Latch App software inside the MP failed its own checksum test. Possible
causes: application software in the MP is not complete - software
download to the MP was not completed successfully - or MP hard-
ware problem. Note: User should attempt to reprogram the MP if
this diagnostic occurs.
Remote
6A1 MP: Could not Store
Starts and Hours
Info Latch MP has determined there was an error with the previous power
down store. Starts and Hours may have been lost for the last 24
hours.
Remote
5FF MP: Invalid Congu-
ration
Immediate Latch MP has an invalid conguration based on the current software
installed
Remote
6A2 MP: Non-Volatile
Block Test Error
Info Latch MP has determined there was an error with a block in the
Non-Volatile memory. Check settings.
Remote
69C MP: Non-Volatile
Memory Reformat
Info Latch MP has determined there was an error in a sector of the Non-Vol-
atile memory and it was reformatted. Check settings.
Remote
D9 MP: Reset Has Oc-
curred
Info NonLatch The main processor has successfully come out of a reset and built
its application. A reset may have been due to a power up, install-
ing new software or conguration. This diagnostic is immediately
and automatically cleared and thus can only be seen in the His-
toric Diagnostic List in TechView
Remote
297 No Differential Re-
frigerant Pressure
Immediate Latch The system differential pressure was below 7.7 Psid. The occur-
rence of this diagnostic will saturate the above “Low Diff Rfgt
Press” Integral and invoke the same “Compressor Cool Down” op
mode.
Remote
1E1 Oil Flow Protection
Fault
Immediate Latch The Oil Pressure Transducer for this Chiller is reading a pressure
either above its Condenser Pressure by 15 Psia or more, or below
its Evaporator Pressure 10 Psia or more for 30 seconds continu-
ously.
Local
5BE Oil Pressure Trans-
ducer
Normal Latch Bad Sensor or LLID Remote
A1 Outdoor Air Tem-
perature Sensor
Info and Spe-
cial Action
Latch Bad Sensor or LLID. This diagnostic will only occur if OA sensor
is congured.OA Chilled water reset will be suspended if selected
and Tracer OA unavailable.
Remote
D7 Over Voltage Normal NonLatch a. Average of all monitored Line voltages above + 10% of nom-
inal. [Must hold = + 10 % of nominal. Must trip = + 15 % of
nominal. Reset differential = min. of 2% and max. of 4%. Time
to trip = minimum of 1 min. and maximum of 5 min.) Design:
Nom. trip: 60 seconds at greater than 112.5%, + or - 2.5%,
Auto Reset at 109% or less.
Remote
E4 Phase Loss Immediate Latch 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.
Local
E5 or
E5
Phase Reversal Immediate Latch 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.
Local
E3 Phase Unbalance Se-
vere Current Imbal-
ance
Normal Latch A 30% Phase cCurrent Unbalance imbalance has been detected
on one phase relative to the average of all 3 phases for 90 con-
tinuous seconds.
Local
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