Carrier 17/19EX - Manual (Page 322)

Protective
Limit
No Motor Current CA P Loss of Motor Cur-
rent: Check sensor. 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
voltage supply.
Check 24-vac input on the SMM (termi-
nals 23 and 24). Check transformers to
SMM. Check power to PSIO module.
Check distribution bus. Consult power
company.
Protective
Limit
Low Line Voltage V P [VALUE] exceeded
limit of [LIMIT]*. Check volt-
age supply.
Protective
Limit
High Line Voltage V P [VALUE] exceeded
limit of [LIMIT]*. Check volt-
age 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 operation.
Protective
Limit Low Condenser
Water Flow CDFL Flow Fault: Check
cond pump/flow switch.
Protective
Limit
High Condenser
Pressure High Cond Pressure
[OPEN]: Check switch, 2C
aux., and water temp/flow. Check the high-presure switch. Check for
proper condenser pressures and con-
denser waterflow. Check for fouled tubes.
Check the 2C aux. contact and the oil
pressure switch in the power panel. This
alarm is not caused by the transducer.
Protective
Limit
High Condenser
Pressure High Cond Pressure
[VALUE]: Check switch,
water flow, and transducer. Check water flow in condenser. Check for
fouled tubes. Transducer should be
checked for accuracy. This alarm is not
caused by the high pressure switch.
Protective
Limit
1CR AUX Contact
Fault CR AUX Starter Contact
Fault: Check 1CR/1M aux
contacts. 1CR auxiliary contact opened while
machine was running. Check starter for
proper operation.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Alert Messages
with Troubleshooting Guides
K. Machine Protect Limit Faults (Continued)
Primary
Message Secondary
Message Alarm Message/
Primary Cause
Additional Cause/Remedy
Excessive numbers of the same fault can lead to severe machine damage. Seek service expertise.
WARNING
!
WARNING