Daikin EWADC12C-XL [276/304] Troubleshooting chart
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Daikin EWADC12C-XL [276/304] Troubleshooting chart

Daikin EWADC12C-XL [276/304] Troubleshooting chart
Troubleshooting Chart ESIE10-01
3–76 Part 3 – Troubleshooting
3
1
3
4
5
6.2 Troubleshooting Chart
Problem Possible causes Possible corrective steps
Compressor will
not run
1 Main power switch is open. 1 Close switch.
2 Unit system switch is open. 2 Check the unit status on the
control panel. Close switch.
3 Circuit switch is in pump-down
position.
3 Check the circuit status on the
control panel. Close switch.
4 Evaporator flow switch is not
closed.
4 Check the unit status on the
control panel. Close switch.
5 Circuit breakers are open. 5 Close circuit breakers.
6 Fuse is blown or circuit breakers
are tripped.
6 Check the electrical circuits and
motor windings for shorts or
grounds.
Investigate for possible
overloading.
Check for loose or corroded
connections.
Reset breakers or replace fuses
after fault is corrected.
7 Unit phase voltage monitor is not
satisfied.
7 Check unit power wiring to unit
for correct phasing. Check
voltage.
8 Compressor overload is tripped. 8 Overloads are manual reset.
Reset overload at button on
overload.
9 Compressor contactor or
contactor coil is defective.
9 Check wiring. Repair or replace
contactor.
10 System was shut down by safety
devices.
10 Determine the type and cause of
the shutdown and correct the
problem before attempting to
restart.
11 There is no cooling required. 11 Check control settings. Wait until
unit calls for cooling.
12 There is motor electrical trouble. 12 See 6, 7, 8 above.
13 There is loose wiring. 13 Check circuits for voltage at
required points. Tighten all power
wiring terminals.

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