Controls, Start-Up, Operation, Service and ... - Climayoreo
Controls, Start-Up, Operation, Service and ... - Climayoreo
Controls, Start-Up, Operation, Service and ... - Climayoreo
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Table 87 — CCN/Linkage Display Table<br />
ITEM EXPANSION RANGE UNITS CCN POINT WRITE STATUS<br />
LINK CCN - LINKAGE<br />
MODE Linkage Active - CCN ON/OFF MODELINK<br />
L.Z.T Linkage Zone Control Tmp dF LZT<br />
L.C.SP Linkage Curr. Cool Setpt dF LCSP<br />
L.H.SP Linkage Curr. Heat Setpt dF LHSP<br />
Table 88 — Compressor Run Hours Display Table<br />
ITEM EXPANSION RANGE UNITS CCN POINT WRITE STATUS<br />
HRS COMPRESSOR RUN HOURS<br />
HR.A1 Compressor A1 Run Hours 0-999999 HRS HOURS_A1 config<br />
HR.A2 Compressor A2 Run Hours 0-999999 HRS HOURS_A2 config<br />
HR.A3 Compressor A3 Run Hours 0-999999 HRS HOURS_A3 config<br />
HR.B1 Compressor B1 Run Hours 0-999999 HRS HOURS_B1 config<br />
HR.B2 Compressor B2 Run Hours 0-999999 HRS HOURS_B2 config<br />
HR.B3 Compressor B3 Run Hours 0-999999 HRS HOURS_B3 config<br />
Alarms <strong>and</strong> Alerts — There are a variety of different<br />
alerts <strong>and</strong> alarms in the system.<br />
P — Pre-Alert: Part of the unit is temporarily down. The<br />
alarm is not broadcast on the CCN network. The alarm relay is<br />
not energized. After an allowable number of retries, if the<br />
function does not recover, the pre-alert will be upgraded to an<br />
alert or an alarm.<br />
T — Alert: Part of the unit is down, but the unit is still partially<br />
able to provide cooling or heating.<br />
A — Alarm: The unit is down <strong>and</strong> is unable to provide cooling<br />
or heating.<br />
All alarms are displayed with a code of AXXX where the A<br />
is the category of alarm (Pre-Alert, Alert, or Alarm) <strong>and</strong> XXX<br />
is the number.<br />
The response of the control system to various alerts <strong>and</strong><br />
alarms depends on the seriousness of the particular alert or<br />
alarm. In the mildest case, an alert does not affect the operation<br />
of the unit in any manner. An alert can also cause a “strike.” A<br />
“striking” alert will cause the circuit to shut down for 15 minutes.<br />
This feature reduces the likelihood of false alarms causing<br />
a properly working system to be shut down incorrectly. If three<br />
strikes occur before the circuit has an opportunity to show that<br />
it can function properly, the circuit will strike out, causing the<br />
shutdown alarm for that particular circuit. Once activated, the<br />
shutdown alarm can only be cleared via an alarm reset.<br />
Circuits with strikes are given an opportunity to reset their<br />
strike counter to zero. As discussed above, a strike typically<br />
causes the circuit to shut down. Fifteen minutes later, that<br />
Table 89 — Compressor <strong>Start</strong>s Display Table<br />
ITEM EXPANSION RANGE UNITS CCN POINT WRITE STATUS<br />
STRT COMPRESSOR STARTS<br />
ST.A1 Compressor A1 <strong>Start</strong>s 0-999999 CY_A1 config<br />
ST.A2 Compressor A2 <strong>Start</strong>s 0-999999 CY_A2 config<br />
ST.A3 Compressor A3 <strong>Start</strong>s 0-999999 CY_A3 config<br />
ST.B1 Compressor B1 <strong>Start</strong>s 0-999999 CY_B1 config<br />
ST.B2 Compressor B2 <strong>Start</strong>s 0-999999 CY_B2 config<br />
ST.B3 Compressor B3 <strong>Start</strong>s 0-999999 CY_B3 config<br />
Table 90 — Software Version Numbers Display Table<br />
ITEM EXPANSION RANGE UNITS CCN POINT WRITE STATUS<br />
VERS SOFTWARE VERSION NUMBERS<br />
MBB CESR131461-xx-xx string<br />
RXB CESR131465-xx-xx string<br />
EXB CESR131465-xx-xx string<br />
CEM CESR131174-xx-xx string<br />
CXB CESR131173-xx-xx string<br />
SCB CESR131226-xx-xx string<br />
VFD1 VERSION-313D string<br />
VFD2 VERSION-313D string<br />
MARQ CESR131171-xx-xx string<br />
NAVI CESR130227-xx-xx string<br />
106<br />
circuit will once again be allowed to run. If the circuit is able to<br />
run for 1 minute, its replacement circuit will be allowed to shut<br />
down (if not required to run to satisfy requested stages). However,<br />
the “troubled” circuit must run continuously for 5 minutes<br />
with no detectable problems before the strike counter is reset to<br />
zero.<br />
In addition, the compressors have several diagnostics<br />
monitoring the safety of the system which may cause a<br />
number of attempts to be re-tried before locking out the system<br />
from operation. This feature reduces the likelihood of false<br />
alarms causing a properly working system to be shutdown incorrectly.<br />
For the compressor <strong>and</strong> circuit diagnostics, some of these<br />
alerts/alarms will not broadcast an initial failure to the CCN<br />
network until all attempts to recover have occurred <strong>and</strong> failed.<br />
These alerts will be accessible in the alarm history of the<br />
control (AlarmsHIST).<br />
All the alarms <strong>and</strong> alerts are summarized in Table 91.<br />
DIAGNOSTIC ALARM CODES AND POSSIBLE<br />
CAUSES<br />
T048 (Ckt A, Oil Return Not Reliable with Only One Comp<br />
Available)<br />
T049 (Ckt B, Oil Return Not Reliable with Only One Comp<br />
Available) — Alert codes T048 <strong>and</strong> T049 are for circuits A<br />
<strong>and</strong> B respectively <strong>and</strong> are active for size 090 <strong>and</strong> 100 units only.<br />
Size 090 <strong>and</strong> 100 units have 3 compressors per circuit. If<br />
load conditions are such that only one compressor is running<br />
on a circuit, a second compressor is periodically turned on to