Table 10D — Prestart Alerts: These alerts only delay start-up. When alert is corrected, the start-up will continue. No reset is necessary.

Primary Message

Secondary Message

Alarm Message/Primary

Additional Cause/

Cause

Remedy

 

 

 

 

 

 

 

 

 

 

Prestart Alert

Starts Limit Exceeded

STARTS EXCESSIVE Com-

Depress the RESET softkey

 

 

pressor Starts (8 in 12 hours)

if additional start is required.

 

 

 

 

 

 

 

Reassess start-up require-

 

 

 

 

 

 

 

ments.

 

 

 

 

 

 

 

 

Prestart Alert

High Motor Tempera-

MTRW VALUE exceeded limit

Check motor cooling line for

 

ture

of [LIMIT]*. Check motor tem-

proper operation. Check for

 

 

perature.

excessive starts within a short

 

 

 

 

 

 

 

time span.

 

 

 

 

 

 

 

 

Prestart Alert

High Bearing Tempera-

MTRB VALUE exceeded limit of

Check oil heater for proper

 

ture

[LIMIT]*. Check thrust bearing

operation, check for low oil

 

 

temperature.

level, partially closed oil sup-

 

 

 

 

 

 

 

ply valves, etc. Check sensor

 

 

 

 

 

 

 

accuracy.

 

 

 

 

 

 

 

 

Prestart Alert

High Discharge Temp

CMPD VALUE exceeded limit of

Check sensor accuracy. Allow

 

 

[LIMIT]*. Check discharge tem-

discharge temperature to

 

 

perature.

cool. Check for excessive

 

 

 

 

 

 

 

starts.

 

 

 

 

 

 

 

 

Prestart Alert

Low Refrigerant Temp

ERT VALUE exceeded limit of

Check transducer accuracy.

 

 

[LIMIT]*. Check refrigerant tem-

Check for low chilled water/

 

 

perature.

brine supply temperature.

 

 

 

 

 

 

 

 

Prestart Alert

Low Oil Temperature

OILT VALUE exceeded limit of

Check oil heater power, oil

 

 

[LIMIT]*. Check oil temperature.

heater relay. Check oil level.

 

 

 

 

 

 

 

 

Prestart Alert

Low Line Voltage

V P VALUE exceeded limit of

Check voltage supply. Check

 

 

 

 

 

 

 

 

 

 

[LIMIT]*. Check voltage supply.

voltage transformers. Consult

 

 

 

 

 

 

 

power utility if voltage is low.

 

 

 

 

 

 

 

Adjust voltage potentiometer

 

 

 

 

 

 

 

in starter for SMM voltage

 

 

 

 

 

 

 

input.

 

 

 

 

 

 

 

 

Prestart Alert

High Line Voltage

V P VALUE exceeded limit of

Check voltage supply. Check

 

 

 

 

 

 

 

 

[LIMIT]*. Check voltage supply.

voltage transformers. Consult

 

 

 

 

 

 

 

power utility if voltage is low.

 

 

 

 

 

 

 

Adjust voltage potentiometer

 

 

 

 

 

 

 

in starter for SMM voltage

 

 

 

 

 

 

 

input.

 

 

 

 

 

 

Prestart Alert

High Condenser Pres-

CRP VALUE exceeded limit of

Check for high condenser

 

sure

[LIMIT]*. Check condenser

water temperature. Check

 

 

water and transducer.

transducer accuracy.

 

 

 

 

 

 

 

 

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

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Carrier PC211 specifications Prestart Alert