Daikin DZ20VC - Indoor Unit (DV*PEC*) Error Codes

SERVICING
53
INDOOR UNIT (DV*PEC*) ERROR CODES
Error
Code
Control Board
LED Displa
y
Transmitted Climate
Talk Message *1
Description Possible Causes Corrective Actions
EE
No display (EE display is EMG
mode)
INTERNAL FAULT
• No power supply to ID blower / no 24 volt power to control board • Blown fuse or circuit breaker • Control board has an internal fault
• Manual disconnect switch OFF • No power supply to ID blower / no 24 volt power to control board • Blown fuse or faulty circuit breaker • Control board has internal fault
• Assure 208/230 volt and 24 volt power to blower and control board. • Check fuse F2U on control board • Check for possible short in 208/230 volt and 24 volt circuits. Repair as necessary. • Replace the control board.
Eb E_Eb No Display
Selecting "no heater kit" and receiving electric heat demand
• No heater kit selected
• Select the valid heater kit on thermostat • Valid dip switch selection (heater kit selection out of range of the unit configuration)
Ed E_Ed Check Heater Kit Dip
Switches (CHECK HTR DIPSW )
Heater Kit dip switches not set properly
• Invalid heater kit selected • Set correct dip switches
E5 E_E5 BLOWN FUSE Fuse Open
• Fuse (F1U) is blown • Connector TB10 is open
• Replace fuse • Check wiring to AUX alarm, heater kit, communication connection. • Re
p
lace the control board
EF E_EF Auxiliary Contacts
Open (AUX ALARM
FAULT)
Auxiliary Switch Open • High water level in the evaporation coil
• The connected alarm device is activated • Auxiliary Alarm terminals (TB4, TB5) are open
• Check water level in drain pan • Check alarm device. • Close Auxiliary terminals TB4 and TB5 if not used
d0 E_d0 Data Not Yet On
Network (NO NET
DATA)
Data not on Network • No shared data on the network • Populate shared data set using memory card.
d1 E_d1 Invalid Data On
Network (INVALID
DATA)
Invalid Data on Network • Wrong shared data on the network • Populate shared data set using memory card.
d4 E_d4 Invalid Memory Card
data (INVALID MC
DATA)
Invalid Memory Card Data • Wrong memory card data
• Replace circuit board • Rewrite data using the correct memory card
b0 E_b0 Blower Motor Not
Running (MOTOR NOT RUN)
Blower Motor not running • Fan/motor obstruction
• Power interruption (low voltage) • Incorrect / loose wiring
• Check for obstruction on the fan/motor • Verify the input voltage at the motor • Check wiring or tighten wiring connections if needed • Replace circuit board or motor
b1 E_b1 Blower
Communication Error
(MOTOR COMM)
Blower Motor
Communication error
• Incorrect / loose wiring • Power interruption (low voltage)
• Check wiring or tighten wiring connections if needed • Verify the input voltage at the motor • Replace circuit board or motor
b2 E_b2 Blower Motor HP
Mismatch
(MOTOR MISMATCH)
Blower Motor HP Mismatch
• Incorrect size motor • Invalid shared data
• Correct motor installation • Populate shared data set using memory card.
b3 E_b3 No Display
Blower Motor operating in Power, Temp or Speed Limiting conditions
• Fan/motor obstruction or blocked filters • Power interruption (low voltage) • Incorrect wiring • Blockage in the airflow (ductwork) or ductwork undersized
• Check for obstruction on the fan/motor/ductwork, clean filters • Verify the input voltage at the motor • Check wiring • Replace motor
(*1) This message is displayed when using the CTK04 thermostat.