Installation and Maintenance Manual

Diagnostics
RTAE-SVX001B-EN 87
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
Comm Loss: Fan
Inverter Fault, Ckt1
None Info 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, Ckt2
None Info 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 Speed
Cmd, Ckt1
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 Speed
Cmd, Ckt2
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 Speed
Cmd, Shared
Ckt1&2
None Info Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. This is an
info warning, as it is conceivable that the circuit may run
without the center shared fan deck working if there are many
other coils/fans on the circuits.
Comm Loss: Heat/
Cool Switch
Heat 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
Comm Loss: Ice-
Making Status
Ice-
Machine
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
Comm Loss: Local
BAS Interface
Chiller Info NonLatch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. Use last
valid BAS setpoints. Diagnostic is cleared when successful
communication is established with the LonTalk LLID (LCIC)
or BACnet LLID (BCIC).
Remote
Comm Loss: Off-
cycle Freeze
Protection Relay
Chiller Info Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss: Oil
Loss Level Sensor
Input – Ckt1
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: Oil
Loss Level Sensor
Input – Ckt2
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: Oil
Pressure, Cprsr1A
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: Oil
Pressure, Cprsr2A
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: Op
Status
Programmable
Relays
None Info Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period.
Remote
Comm Loss:
Outdoor Air
Temperature
Chiller
Normal
Shutdown
Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. For RTAE
if this diagnostic occurs, operational pumpdown will be
performed regardless of the last valid temperature
Remote
Comm Loss:
Suction Rfgt
Pressure, Ckt1
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:
Suction Rfgt
Pressure, Ckt2
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
Table 34. Communication diagnostics (continued)
Diagnostic
Name
Affects
Target Severity Persistence
Active Modes
[Inactive
Modes] Criteria
Reset
Level