Troubleshooting Chart - Daikin Comfort Flex CLIV Series Installation, Operation And Maintenance Manual

Problem Possible causes
Main or compressor
switch open.
Damaged fuse, open circuit brakes.
Thermal overloads have skyrocketed.
The
compressor
does not
Defective contactor or coil.
work.
System shutdown
protection devices.
Does not require refrigeration.
Liquid line solenoid does not open.
Motor electrical problems.
Loose wiring.
Compressor running in reverse.
The Inadequate piping or supports at
compressor suction or discharge.
is noisy or
vibrates
Compressor insulator bushing worn.
Compressor mechanical failure.
Low oil level.
Condenser coil dirty.
Fan does not work.
Fan failure.
Alta presión
de descarga.
Fan motor runs in reverse.
No or failed condenser caps.
No condensables in system.
Dirty evaporator.
Lack of refrigerant.
Low water flow.
Expansion valve malfunction or
failure.
Low suction
pressure.
Solenoid value not open.
Liquid line filter drier fouled.
Condensing temperature too low.
Excess oil used.
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Possible corrective actions
disconnect Switch closed.
Check the electrical circuit and possible short circuit, line to ground, loss of
connections or motor windings causing the failure. Replace the fuse and reset
the compressor brakes, only after detecting and correcting the cause of the
failure.
Overloads are self-resetting. Check supply voltage, operating amps, cycle
times and mechanical operations. Allow time for automatic reset.
Replace.
by equipment Determine the type and cause of the shutdown and correct it before restarting
the equipment. For example, low or high pressure, water freezing, etc.
Wait until the unit calls for cooling.
Reparar o sustituir el solenoide.
Check if the motor is open, shorted or bubbling.
Check all cable joints and tighten all terminal screws.
Check that the unit and compressor are on the correct phase of the power
line.
Reposition, add or remove hangers.
Replace.
Check for possible problem in compressor failure and replace compressor.
Check the possible problem before it damages the compressor.
Clean the coil.
Check the electrical circuit and the fan motor.
Check the electrical circuit and possible problems before replacing the fan
motor.
Check that the unit and fan motor are properly supplanted by the line voltage.
Check or replace the condenser caps on the front and rear of the unit.
Remove the non-condensables in the system and replace the charge.
Backwash or chemical cleaning.
Check for leaks, repair and add necessary charge. Check liquid sight glass.
Adjust the water flow required for the equipment.
Check or replace (if necessary) valve and set proper superheat.
Check circuit and possible problem of solenoid valve not opening, if neces-
sary replace.
Check pressure drop or temperature for diagnostics.
Check means of regulating condenser temperature.
If the system has excess oil, recover and adjust by observing the sight glass
on the compressor.
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Troubleshooting Chart

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