Installation and Maintenance Manual

Diagnostics
76 RTAE-SVX001B-EN
Main Processor Diagnostics
AFD xA Rectifier
Heatsink Over Temp
Circuit
Immediate
(decel)
NonLatch All
The diode heatsink temperature exceeded the cut out
temperature.
Local
AFD xA Watchdog
Timer Overflow
Circuit Immediate Latch All
Watchdog timer overflowed. Requires power cycle to restore
operation.
Local
Table 32. AFD diagnostics (continued)
Diagnostic
Name and
Source
Affects
Target Severity Persistence
Active Modes
[Inactive
Modes] Criteria
Reset
Level
Table 33. Main processor diagnostics
Diagnostic
Name
Affects
Target Severity Persistence
Active Modes
[Inactive
Modes] Criteria
Reset
Level
BAS
Communication
Lost
None
Special
Action
NonLatch All
The BAS was setup as “installed” at the MP and the Lontalk LCIC
lost communications with the BAS for 15 contiguous minutes
after it had been established. Refer to Section on Setpoint
Arbitration to determine how setpoints and operating modes
may be affected by the comm loss. The chiller follows the value
of the Tracer Default Run Command which can be previously
written by Tracer and stored nonvolatilely by the MP (either use
local or shutdown). Note that this diagnostic is never
operational for BACnet Communication interface (BCI-C) and
only operational with a LonTalk Communication interface
(LCI-C) if so configured by the BAS or Tracer system.
Remote
BAS Failed to
Establish
Communication
None
Special
Action
NonLatch At power-up
The BAS was setup as “installed” and the BAS did not
communicate with the Lontalk LCIC within 15 minutes after
chiller controls power-up. Refer to Section on Setpoint
Arbitration to determine how setpoints and operating modes
may be effected. Note that this diagnostic is never operational
for BACnet Communication interface (BCI-C) and only
operational with a LonTalk Communication interface (LCI-C) if
so configured by the BAS or Tracer system.
Remote
Check Clock Chiller Info Latch All
The real time clock had detected loss of its oscillator at some
time in the past. Check / replace battery? This diagnostic can
be effectively cleared only by writing a new value to the chiller’s
time clock using the TU or DynaView’s “set chiller time”
functions.
Remote
Condenser Fan
Inverter Fault -
Ckt1
None Info NonLatch All
A fault signal has been detected from at least one of the
Variable Speed Inverter Drive Condenser Fans of Circuit 1
(including the right hand fan of the Shared Fan Module if
present). No action is taken.
Remote
Condenser Fan
Inverter Fault -
Ckt2
None Info NonLatch All
A fault signal has been detected from at least one of the
Variable Speed Inverter Drive Condenser Fans of Circuit 2
(including the left hand fan of the Shared Fan Module if
present). No action is taken.
Remote
Condenser Rfgt
Pressure
Transducer -
Ckt1
Circuit Immediate Latch All Bad Sensor or LLID Remote
Condenser Rfgt
Pressure
Transducer -
Ckt2
Circuit Immediate Latch All Bad Sensor or LLID Remote
Discharge Rfgt
Temp Sensor –
Cprsr1A
Circuit Immediate Latch All Bad Sensor or LLID Remote
Discharge Rfgt
Temp Sensor –
Cprsr2A
Circuit Immediate Latch All Bad Sensor or LLID Remote
Drive Cooling
Supply Temp
Sensor – Ckt1
Circuit Normal Latch All Bad Sensor or LLID. Remote