Carrier 17/19EX - Manual (Page 313)

* [LIMIT] is shown on the LID as temperature, pressure, voltage, etc., set point predefined or selected by
the operator as an override, alert, or alarm condition. [VALUE] is the actual pressure, temperature,
voltage, etc., at which the control tripped.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages
with Troubleshooting Guides
D. Pre-Start 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
Cause
Additional Cause/Remedy
Prestart Alert
Starts Limit Exceeded STARTS EXCESSIVE Com-
pressor Starts (8 in 12 hours) Depress the RESET softkey if addi-
tional start is required. Reasses
start-up requirements.
Prestart Alert
High Motor Tempera-
ture MTRW [VALUE] exceeded limit
of [LIMIT]*. Check motor tem-
perature. Check motor cooling line for proper
operation. Check for excessive
starts within a short time span.
Prestart Alert
High Bearing Tempera-
ture MTRB [VALUE] exceeded limit
of [LIMIT]*. Check thrust bear-
ing temperature. Check oil heater for proper opera-
tion, check for low oil level, partially
closed oil supply valves, etc. Check
sensor accuracy.
Prestart Alert
High Discharge Temp CMPD [VALUE] exceeded limit
of [LIMIT]*. Check discharge
temperature. Check sensor accuracy. Allow dis-
charge temperature to cool. Check
for excessive starts.
Prestart Alert
Low Refrigerant Temp ERT [VALUE] exceeded limit of
[LIMIT]*. Check refrigerant tem-
perature. Check transducer accuracy.
Check for low chilled water/brine
supply temperature.
Prestart Alert
Low Oil Temperature OILT [VALUE] exceeded limit of
[LIMIT]*. Check oil temperature. Check oil heater power, oil heater
relay. Check oil level.
Prestart Alert
Low Line Voltage V P [VALUE] exceeded limit of
[LIMIT]*. Check voltage supply. Check voltage supply. Check volt-
age transformers. Consult power
utility if voltage is low. Calibrate
voltage reading on STATUS01
Table.
Prestart Alert
High Line Voltage V P [VALUE] exceeded limit of
[LIMIT]*. Check voltage supply. Check voltage supply. Check volt-
age transformers. Consult power
utility if voltage is low. Calibrate
voltage reading on STATUS01
Table.
Prestart Alert
High Condenser Pres-
sure CRP [VALUE] exceeded limit of
[LIMIT]*. Check condenser
water and transducer. Check for high condenser water
temperature. Check transducer
accuracy.