Daikin DZ17VSA Instructions D'installation page 26

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rouBleShootIng
ClimateTalk PCB LED Transmitted ClimateTalk
Fault Code Display Message
12 E12 oD cTrl fAil1
Hi PrESSUrE c
13 E13
(c = criTicAl)
Hi PrESSUrE M
14 -
(M = Minor)
15 E15 loW PrESSUrE c
16 - loW PrESSUrE M
17 E17 coMPrESSor fAil
18 E18 oD cTrl fAil2
19 E19 PcB or fAn fAil
20 E20 EEV oPEn cKT
21 E21 EEV cTrl fAil
22 E22 Hi DiScH TEMP
23 E23 DiScH TEMP fAil
24 E24 HPS oPEn
Thermostat Fault
• High electrical noise
Indicates a general memory error.
• Faulty control board
• Blocked/restricted heat pump coil and/
• Stop valve not completely open
This error indicates the equipment • Overcharge
is experiencing frequent high pres- • Outdoor fan not running
sure faults. • High pressure switch (HPS) inoperable
• Faulty indoor and outdoor EEV coil
• Faulty indoor and outdoor EEV
• Faulty control board
• Blocked/restricted heat pump coil and/
This error indicates the equipment
• Stop valve not completely open
is experiencing frequent high pres-
• Overcharge
sure faults. Control has determined
• Outdoor fan not running
continued operation is acceptable.
• High pressure switch (HPS) inoperable
This indicates they may be a prob-
• Faulty indoor and outdoor EEV coil
lem with the equipment.
• Faulty indoor and outdoor EEV
• Faulty control board
• Stop valve not completely open
• Restriction in refrigerant lines
• Low refrigerant charge
• Refrigerant leak
This error indicates the equipment
• Low pressure sensor inoperable or not
is experiencing frequent low pres-
sure faults.
• Indoor fan motor not functioning correctly
• Faulty indoor and outdoor EEV coil
• Faulty indoor and outdoor EEV
• Faulty control board
• Stop valve not completely open
• Restriction in refrigerant lines
This error indicates the equipment • Low refrigerant charge
is experiencing frequent low pres- • Refrigerant leak
sure faults. Control has determined • Low pressure sensor inoperable or not
continued operation is acceptable.
This indicates they may be a prob- • Indoor fan motor not functioning correctly
lem with the equipment. • Faulty indoor and outdoor EEV coil
• Faulty indoor and outdoor EEV
• Faulty control board
This error indicates the equipment
• Stop valve not completely open
is experiencing frequent compres- • The compressor wire is lost phase
sor faults. • Compressor motor failure
• Outdoor fan motor not connected properly
Indicates the control board may
• Faulty control board
need to be replaced.
• Electrical Noise
• Obstruction in fan rotation
This error indicates the equipment • Outdoor fan motor not connected properly
is experiencing frequent outdoor • Outdoor fan not running
control board and/or motor faults. • Faulty control board
• Electrical Noise
• Outdoor EEV coil is not connected
EEV coil is not connected.
• Faulty outdoor EEV coil
• Thermistors inoperable or improperly
This error indicates the equipment • Faulty indoor and outdoor EEV coil
is experiencing frequent low dis- • Faulty indoor and outdoor EEV
charge superheat faults. • Over charge
• Faulty pressure sensor
• Faulty control board
• Discharge thermistor inoperable or
This error indicates the equipment • Discharge thermistor is put in incorrect
is experiencing frequent high
discharge temperature faults. • The compressor enclosure temperature
Discharge thermistor is not put in
correct position. • Low refrigerant charge
• Overcharge
• Faulty compressor
The control has detected that the
• Discharge thermistor inoperable or
Discharge Temperature Sensor is
out of range.
The high pressure switch is open. • High pressure switch (HPS) inoperable
Probable Causes
or lines
or lines
properly connected
properly connected
connected
improperly connected
position or off
is too high
improperly connected
26 26
Corrective Actions
• Replace control board if necessary
• Check and clean heat pump coil and/or lines
• Check the opening of stop valve, should be full open;
Repair/replace if needed
• Check refrigerant charge level; Adjust if needed
• Check outdoor fan motor & wiring; Repair/replace if
needed
• Check indoor and outdoor EEV; Replace if needed
• Check indoor and outdoor EEV coil; Replace if needed
• Replace control board if necessary
• Check and clean heat pump coil and/or lines
• Check the opening of stop valve, should be full open;
Repair/replace if needed
• Check refrigerant charge level; Adjust if needed
• Check outdoor fan motor & wiring; Repair/replace if
needed
• Check indoor and outdoor EEV; Replace if needed
• Check indoor and outdoor EEV coil; Replace if needed
• Replace control board if necessary
• Check the opening of stop valve, should be full open;
Repair/replace if needed
• Check for restrictions in refrigerant line; Repair/replace
if needed
• Check refrigerant charge level; Adjust if needed
• Test for system leaks using leak test procedure
• Check the connection to low pressure sensor; Repair/
replace if needed
• Check indoor and outdoor EEV; Replace if needed
• Check indoor and outdoor EEV coil; Replace if needed
• Check indoor blower motor & wiring; Repair/replace if
needed
• Replace control board if necessary
• Check the opening of stop valve, should be full open;
Repair/replace if needed
• Check for restrictions in refrigerant line; Repair/replace
if needed
• Check refrigerant charge level; Adjust if needed
• Test for system leaks using leak test procedure
• Check the connection to low pressure sensor; Repair/
replace if needed
• Check indoor and outdoor EEV; Replace if needed
• Check indoor and outdoor EEV coil; Replace if needed
• Check indoor blower motor & wiring; Repair/replace if
needed
• Replace control board if necessary
• Check the opening of stop valve, should be full open;
Repair/replace if needed
• Check the wire between control board and compressor
• Inspect compressor motor for proper function; Replace
if necessary
• Check wiring from Outdoor fan motor to control board;
Repair if needed
• Replace control board if necessary
• Check and clean grille of any debris
• Check wiring from Outdoor fan motor to control board;
Repair if needed
• Check outdoor fan motor & wiring; Repair/replace if
needed
• Replace control board if necessary
• Check outdoor EEV coil connection
Repair/replace as needed
• Check the connection to thermistors; Repair/replace if
needed
• Check indoor and outdoor EEV coil; Repair/replace if
needed
• Check indoor and outdoor EEV; Replace/repair if needed
• Check refrigerant charge level; Adjust if needed
• Check pressure sensor; Repair/replace if needed
• Replace control board if necessary
• Check discharge thermistor resistance and connections;
Repair/replace as needed
• Check discharge thermistor position
• Check refrigerant charge level; Adjust if needed
• Check the compressor; Repair/replace if needed
• Check discharge thermistor resistance and connections;
Repair/replace as needed
• Check resistance on HPS to verify operation; Replace
if needed