Protective
Limit
No Motor Current CA P Loss of Motor Cur-
rent: Check sensor. Check wiring: Check torqu e 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 o n the SMM (termi-
nals 23 and 24). Check tr ansformers to
SMM. Check power to P SIO 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 ver ify
proper switch operation . Check all water
valves and pump opera tion.
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 pressur es and con-
denser waterflow. Check f or fouled tubes.
Check the 2C aux. cont act 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 transd ucer.
Check water flow in condense r. Check for
fouled tubes. Transduc er should be
checked for accuracy. Th is alarm is not
caused by the high pre ssure switch.
Protective
Limit
1CR AUX Contact
Fault CR AUX Starter Contact
Fault: Check 1CR/1M aux
contacts.
1CR auxiliary contact ope ned while
machine was running. C heck starter for
proper operation.
Table 8 — LID Primary and Secondary Messages and Custom Alarm/Al ert Messages
with Troubleshooting Guides
K. Machine Protect Limit Faults (Continued)
Primary
Message Secondary
Message Alarm Messa ge/
Primary Cause Additional Cause/ Rem edy
Excessive numbers of the same fau lt can lead to s evere machine damag e. Seek service e xpertise.
WARNING !WARNING