Carrier 23XL Spezifikationen PDF herunterladen (Seite 75)

K. MACHINE PROTECT LIMIT FAULTS

Excessive numbers of the same fault can lead to severe

machine damage. Seek service expertise.

PRIMARY MESSAGE SECONDARY MESSAGE ALARM MESSAGE/

PRIMARY CAUSE

ADDITIONAL CAUSE/REMEDY

PROTECTIVE LIMIT HIGH DISCHARGE TEMP CMPD VALUE exceeded

limit of [LIMIT]*. Check oil

temperature.

Check discharge temperature immediately. Check

for sensor accuracy. Check for proper con-

denser ﬂow and temperature, check oil sump tem-

perature. Check condenser for fouled tubes or

air in machine.

PROTECTIVE LIMIT LOW REFRIGERANT TEMP ERT VALUE exceeded limit of

[LIMIT]*. Check evap pump and

ﬂow switch.

Check for proper amount of refrigerant charge,

check for proper water ﬂow and temperatures.

Check for proper slide valve operation.

PROTECTIVE LIMIT HIGH MOTOR TEMPERATURE MTRW VALUE exceeded limit

of [LIMIT]*. Check motor

cooling.

Check motor temperature immediately. Check sen-

sor for accuracy. Check for proper condenser flow

and temperature. Check motor cooling system

for restrictions. Check refrigerant ﬁlter.

PROTECTIVE LIMIT OIL LEVEL SENSOR OILSS check oil level in sepa-

rator.

Check for low oil level. Check oil level switch op-

eration.

PROTECTIVE LIMIT LOW OIL PRESSURE OILPD VALUE exceeded limit

of [LIMIT]*. Check oil system, oil

solenoid, and transducer.

Check oil level, check for dirty ﬁlter. Check tower

water temperature.

PROTECTIVE LIMIT NO MOTOR CURRENT CA P Loss of Motor Current:

Check sensor and signal.

Check wiring: Check torque setting on solid state

starter. Check for main circuit breaker trip. Check

power supply to PSIO module.

PROTECTIVE LIMIT POWER LOSS V P Power Loss: Check volt-

age supply.

Check 24-vdc input sensor on the SMM; adjust

potentiometer if necessary. Check transformers

to SMM. Check distribution bus. Consult power

company.

PROTECTIVE LIMIT LOW LINE VOLTAGE V P VALUE exceeded limit of

[LIMIT]*. Check voltage

supply.

PROTECTIVE LIMIT HIGH LINE VOLTAGE V P VALUE exceeded limit

of [LIMIT]*. Check voltage

supply.

PROTECTIVE LIMIT LOW CHILLED WATER FLOW EVFL Flow Fault: Check evap.

pump/ﬂow switch.

Perform pumps control test and verify proper switch

operation. Check all water valves and pump op-

eration.

PROTECTIVE LIMIT LOW CONDENSER WATER FLOW CDFL Flow Fault: Check cond.

pump/ﬂow switch.

PROTECTIVE LIMIT HIGH CONDENSER PRESSURE PRS TRIP High Condenser

Pressure: Check switch and

water temp/ﬂow.

Condenser pressure transducer tripped ma-

chine. Check for proper condenser water ﬂows

and temperature. Check high-pressure switch.

PROTECTIVE LIMIT HIGH CONDENSER PRESSURE CRP VALUE exceeded limit

of [LIMIT]*. Check condenser

water and transducer.

Check discharge pressure switch. Check for proper

condenser ﬂow and temperature. Check for fouled

tubes.

PROTECTIVE LIMIT 1CR AUX CONTACT FAULT CR AUXStarter Contact Fault:

Check 1CR/1M aux contacts.

1CR auxiliary contact opened while machine was

running. Check starter for proper operation.

PROTECTIVE LIMIT RUN AUX CONTACT FAULT RUN AUX Starter Contact

Fault: Check 1CR/1M aux

contacts.

Run auxiliary contact opened while machine was

running. Check starter for proper operation.

PROTECTIVE LIMIT CCN OVERRIDE STOP CHIL S S CCN Override

Stop while in LOCAL run mode.

CCN has signaled machine to stop. Reset and

restart when ready. If the signal was sent by the

LID, release the Stop signal on STATUS01 screen.

PROTECTIVE LIMIT SPARE SAFETY DEVICE SRP PL Spare Safety Fault:

Check contacts.

Spare safety input has tripped or factory-installed

jumper not present.

PROTECTIVE LIMIT EXCESSIVE MOTOR AMPS CA P VALUE exceeded limit

of [LIMIT]*. High Amps; Check

slide valve.

Check motor current for proper calibration. Check

slide valve for proper operation.

PROTECTIVE LIMIT STARTER FAULT STR FLT Starter Fault: Check

starter for fault source.

Check starter for possible ground fault, reverse

rotation, voltage trip, etc.

PROTECTIVE LIMIT STARTER OVERLOAD TRIP STR FLT Starter Overload

Trip: Check amps calibration/

reset overload.

Reset overloads and reset alarm. Check motor

current calibration or overload calibration (do not

ﬁeld-calibrate overloads).

PROTECTIVE LIMIT TRANSDUCER VOLTAGE FAULT V REF VALUE exceeded limit

of [LIMIT]*. Check transducer

power supply.

Check transformer power (5 vdc) supply to

transducers. Power must be 4.5 to 5.5 vdc.

PROTECTIVE LIMIT DIRTY OIL FILTER OILP exceeded limit of [LIMIT]*.

Replace oil ﬁlter.

Check oil ﬁlter. Check solenoid valve operation.

Check oil supply valves. Check discharge and

oil transducer accuracy.

PROTECTIVE UNIT† LOW DISCHARGE SUPERHEAT Lowdischarge superheat. Check

refrigerant and oil charges.

Excessive oil/refrigerant charge, low load opera-

tion. Reclaim oil lost to refrigerant circuit; re-

move excess oil. Do not operate machine below

minimum load. Check tower control operation.

*[LIMIT] is shown on the LID as temperature, pressure, voltage, etc., predeﬁned or selected by the operator as an override or an alert.

†Applicable to Frame 1 and 2 units only.

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 103 104

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