Service manual

Troubleshooting SiEBE12-625
200 Service Diagnosis
5.2 Outdoor Units
4: ON, 1: OFF, 5: Blinks
Green : Flashes when in normal condition
Red : OFF in normal condition
- : Not used for troubleshooting
∗ : Varies depending on the cases.
Note: 1. The indications in the parenthesis ( ) in the remote controller display column are displayed
only when system-down occurs.
2. When a sensor error occurs, check the remote controller display to determine which sensor
is malfunctioning.
If the remote controller does not indicate the error type, conduct the following operation.
*Turn the power switch off and back on again. If the same LED indication appears again
immediately after the power is turned on, the fault is in the thermistor.
*If the above condition does not result, the fault is in the CT.
3. The indoor unit error indication may take the precedence in the remote controller display.
Outdoor Unit LED Indication Indication on
the remote
controller
Description of The Fault
Reference
Page
Green Red
A1234
5333300
Outdoor unit in normal condition
(Conduct a diagnosis of the indoor unit.)
—
UA
Unspecified voltage (between indoor and outdoor units)
238
UH
Anti-icing function in other rooms
238
53344 (U0)
Insufficient gas
235
54334U2
Low-voltage detection
237
54344A5
Freeze-up protection control
212
54343 (E5)
OL activation (compressor overload)
214
53443 (E6)
Compressor lock
215
54444E7
DC fan lock
216
53434E8
Input over current detection
217
54333EA
Four way valve abnormality
219
54343F3
Discharge pipe temperature control
221
54344F6
High pressure control in cooling
222
54433H6
Position sensor abnormality
224
H9
Outdoor air thermistor or related abnormality
227
J3
Discharge pipe thermistor or related abnormality
227
J6
Heat exchanger thermistor or related abnormality
227
J8
Liquid pipe thermistor or related abnormality
227
J9
Gas pipe thermistor or related abnormality
227
P4
Radiation fin thermistor or related abnormality
227
54433H8
CT or related abnormality
225
54434L3
Electrical box temperature rise
229
53334L4
Radiation fin temperature rise
(Protection of driver overheating)
231
53343L5
Output over current detection
233