Daikin MKS-T Series, Service Manual

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Code Indication on Remote Controller SiSG121917E
115 Part 6 Service Diagnosis
Notes
4.2 Outdoor Unit
i
: ON,
h
: OFF,
j
: Blinks
Green : Blinks in normal condition
Red : OFF in normal condition
1. The error codes in the parenthesis ( ) are displayed only when the system is shut down.
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 code, conduct the following procedure.

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 code may take the precedence in the remote controller display.
Outdoor Unit LED Indication
Error
Codes
Description
Reference
Page
Green Red
A 1 2 3 4 5
j h h h h h
00 Normal condition —
UA Unspecified voltage (between indoor unit and
outdoor unit)
144
UH
Anti-icing function in other rooms 144
j h h i i h
(
U0
) Refrigerant shortage 138
j i h h i h U2
Low-voltage detection or over-voltage detection 140
j h i h h h U3
Wiring Error Check Unexecuted 142
j h i i i h U7
Signal transmission error (on outdoor unit PCB) 143
j i h i i h A5
Anti-icing control for indoor unit 145
j i i i h h E1
Outdoor unit PCB abnormality 147
j i h i h h
(
E5
) OL activation (compressor overload) 148
j h i i h h
(
E6
) Compressor lock 150
j i i i i h E7
DC fan lock 151
j h i h i h E8
Input overcurrent detection 152
j i h i h h F3
Discharge pipe temperature control 153
j i h i i h F6
High pressure control in cooling 154
j h h i i h
F8
System shutdown due to temperature abnormality
in compressor
156
j i i h h h
H0 Compressor system sensor abnormality 157
H6
Position sensor abnormality 158
H8 CT or related abnormality 160
H9 Outdoor temperature thermistor or related
abnormality
162
J3 Discharge pipe thermistor or related abnormality 162
J6 Outdoor heat exchanger thermistor or related
abnormality
162
J8 Liquid pipe thermistor or related abnormality 162
J9 Gas pipe thermistor or related abnormality 162
P4 Radiation fin thermistor or related abnormality 162
j i i h i h L3 Electrical box temperature rise 164
j h h h i h L4 Radiation fin temperature rise 165
j h h i h h L5 Output overcurrent detection 167