Carrier 19XL - Manual (Page 295)

Protective
Limit
Power Loss V P Power Loss: Check
voltage supply.
Check 24-vdc input sensor on the SMM;
adjust potentiometer if necessary. 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
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 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-pressure 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 trans-
ducer. 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.
Protective
Limit
Run Aux Contact
Fault RUN AUX Starter Con-
tact Fault: Check 1CR/1M
aux contacts. Run auxiliary contact opened while
machine was running. Check starter for
proper operation.
Table 10K — 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