Diagnostics
RLC-SVU05A-E446
Diagnostic Name Affects
Ta r g e t
Severity Persistence Active Modes
[Inactive
Modes]
Criteria Reset
Level
Comm Loss: Male Port
Unload Compressor 1A
Circuit Normal Latch All Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: Male Port Load
Compressor 1A
Circuit Normal Latch All Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: Male Port
Unload Compressor 2A
Circuit Normal Latch All Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: Male Port Load
Compressor 2A
Circuit Normal Latch All Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: Female Step
Load Compressor 1A
Circuit Normal Latch All Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: Female Step
Load Compressor 2A
Circuit Normal Latch All Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: Motor Winding
Thermostat Compressor 1A
Circuit Normal Latch All Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: Motor
Winding Thermostat
Compressor 2A
Circuit Normal Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: External
Auto/Stop
Chiller Normal Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: Emergency
Stop
Chiller Normal Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: External
Circuit Lockout, Circuit #1
Circuit
Special
Action
Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. MP will
nonvolatily hold the lockout state (enabled or disabled) that
was in effect at the time of comm loss.
Remote
Comm Loss: External
Circuit Lockout, Circuit #2
Circuit
Special
Action
Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. MP will
nonvolatily hold the lockout state (enabled or disabled) that
was in effect at the time of comm loss
Remote
Comm Loss: External Ice
Building Command
Ice
Making
Mode
Special
Action
Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. Chiller
shall revert to normal (non-ice building) mode regardless of
last state.
Remote
Table 5 - Communication Diagnostics
Notes:
1. The following communication
loss diagnostics will not occur
unless that input or output is
required to be present by the
particular configuration and
installed options for the chiller.
2. Communication diagnostics
(with the exception of "Excessive
Loss of Comm" are named by
the Functional Name of the input
or output that is no longer being
heard from by the Main
Processor.
Many LLIDs, such as the Quad Relay
LLID, have more than one functional
output associated with it. A comm
loss with such a multiple function
board will generate multiple
diagnostics. Refer to the Chiller's
wiring diagrams to relate the
occurrence of multiple
communication diagnostics back to
the physical llid boards that they
have been assigned to (bound).
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