Compressor; D The X Compressor Does Not Start; Who Can Take Corrective Action Heating U = User S = Specialised Personnel; Water Circulation Pump Defective - Trane CXAO Installation Operation & Maintenance

SYMPTOM cooling
I Frost in
liquid pipe
downstream
from a fi lter
L The unit
works
continuously
without ever
stopping
M The
unit works
regularly
but with an
insuffi cient
capacity
N Frost in the

compressor

intake pipe
O The
defrosting
cycle is never
activated
P Abnormal
noises
detected in
the system
Q Unit does
not start
RF-SVX003A-GB
Who can take
corrective
action
heating
U = User
S = specialised
personnel
X X
X X
X X
X X
X X
X X
X X
X X
X X
X
X X
X X
X X
X
X
X X
X X
X X
Probable cause
S The liquid fi lter is clogged
S Lack of refrigerant gas
Incorrect tuning of the
U
operating thermostat
S Excessive thermal load
Compressor does not give
S
the thermal output
S The liquid fi lter is clogged
S Low refrigerant charge
4-way reversing valve
S
defective
Expansion device that is
S
not working properly
Water circulation pump
S
blocked
Water circulation pump
S
defective
S Low refrigerant charge
S The liquid fi lter is clogged
4-way reversing valve
S
defective
The defrost thermostat
S is worn out or has an
incorrect calibration value
S Compressor noisy
S The panels vibrate
phases of the supply
s
network reversed
Troubleshooting
Possible remedy
Replace the fi lter
See item G.
Check the setting
Reduce the thermal load
Check, change or revise
Replace
See point G
Check the power supply
and the coils of the valve
and replace the valve
Verify replace
Unlock the pump
Check the pump and
replace if necessary
See point G
Replace
Check the power supply
and the coil of the valve
and replace the valve
Check and replace if
defective or change the
calibration value
Check and replace if
necessary
Fasten properly
Invert phases
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