Carrier 69NT40-561-019, Руководство по эксплуатации и обслуживанию

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4–33 T-359
AL17
Compressor
Pressure
Delta Fault
Compressor has at-
tempted to start in both
directions and fails to
generate sufficient
pressure differential
between SPT and
DPT.
N/A
Controller will attempt re-
start every 20 minutes
and deactivate the alarm
if successful.
Resume normal
operation.
Discharge Pres-
sure Transducer
(DPT)
Confirm accurate DPT
pressure readings, refer
to MANIFOLD GAUGE
SET
Section 7.2
Replace DPT if
defective.
Suction Pressure
Transducer (SPT)
Confirm accurate SPT
pressure readings, refer
to MANIFOLD GAUGE
SET
Section 7.2 .
Replace SPT if
defective.
Monitor unit
Alarm is display only the
alarm may clear itself
during operation.
If alarm remains active or
is repetitive replace com-
pressor at next available
opportunity.
AL18
Discharge
Pressure
High
Discharge pressure is
over the maximum for
10 minutes within the
last hour.
Restrictions in the
refrigeration
system.
Ensure Liquid Line Ser-
vice Valve is fully open. Open Liquid Line Service
Valve as needed.
Filter Drier
Check the filter drier, if it
is iced up or very cold it
indicates that the filter
drier needs replacement. Replace the filter drier if
needed, refer to FILTER
DRIER Service
Section
7.8 .
Condenser Fan
Check Condenser Fan
for proper operation.
Correct as required.
Discharge
Pressure
Transducer (DPT)
Confirm accurate DPT
pressure readings, refer
to MANIFOLD GAUGE
SET
Section 7.2 .
Replace DPT
if defective.
Non-condens-
ables in the
refrigeration
system.
With the unit off allow
system to stabilize to am-
bient temperature. Check
system pressure against
PT Chart for 134a, refer
to
Table 7–5 .
Correct as required, refer
to Refrigerant Charge
Section 7.3.5 .
Refrigerant Check refrigerant level.
Correct as required, refer
to Refrigerant Charge
Section 7.3.5 .
Table 4–6 Controller Alarm Indications
CODE # CAUSE COMPONENTS TROUBLESHOOTING CORRECTIVE ACTIONS