Diagnostics
RTAC-SVX01J-EN 163
Comm Loss: Evaporator
Rfgt Liquid Level, Circuit
#1
Circuit Immediate Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: Evaporator
Rfgt Liquid Level, Circuit
#2
Circuit Immediate Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: Evaporator
Rfgt Pressure, Circuit #1
Circuit Immediate Latch
All
[Ckt/Cprsr
lock out]
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. Note: This
diagnostic is replaced by diagnostic 5FB below with Rev 15.0
Remote
Comm Loss: Evaporator
Rfgt Pressure, Circuit #2
Circuit Immediate Latch
All
[Ckt/Cprsr
lock out]
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. Note: This
diagnostic is replaced by diagnostic 5FD below with Rev 15.0
Remote
Comm Loss: Evaporator
Water Pump Control
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
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: External
Chilled Water Setpoint
External
Chilled
Water
Setpoint
Special
Mode
NonLatch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. Chiller shall
discontinue use of the External Chilled Water Setpoint source and
revert to the next higher priority for setpoint arbitration
Remote
Comm Loss: External
Circuit Lockout, Circuit
#1
Circuit
Special
Mode
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
Mode
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
Current Limit Setpoint
External
Current
Limit
setpoint
Special
Mode
NonLatch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. Chiller shall
discontinue use of the External Current limit setpoint and revert to
the next higher priority for Current Limit setpoint arbitration
Remote
Comm Loss: Fan Control
Circuit #1, Stage #1
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: Fan Control
Circuit #1, Stage #2
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: Fan Control
Circuit #1, Stage #3
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: Fan Control
Circuit #1, Stage #4
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: Fan Control
Circuit #2, Stage #1
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: Fan Control
Circuit #2, Stage #2
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: Fan Control
Circuit #2, Stage #3
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: Fan Control
Circuit #2, Stage #4
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: Fan Inverter
Fault, Circuit #1 or Circuit
#1, Drive 1
Inverter
Special
Mode
Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. Operate the
remaining fans as fixed speed fan deck.
Remote
Comm Loss: Fan Inverter
Fault, Circuit #1, Drive 2
Inverter
Special
Mode
Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. Operate the
remaining fans as fixed speed fan deck.
Remote
Comm Loss: Fan Inverter
Fault, Circuit #2 or Circuit
#2, Drive 1
Inverter
Special
Mode
Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. Operate the
remaining fans as fixed speed fan deck.
Remote
Table 68. Communication diagnostics (continued)
Diagnostic Name
Affects
Target Severity
Persist-
ence
Active
Modes
[Inactive
Modes] Criteria
Reset
Level
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