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Daikin Altherma™ Troubling Shooting. 2 Code: 81 Part: Outlet water thermistor Location: Activation failure: Possible action to resolve the problem: –Check.

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Presentation on theme: "Daikin Altherma™ Troubling Shooting. 2 Code: 81 Part: Outlet water thermistor Location: Activation failure: Possible action to resolve the problem: –Check."— Presentation transcript:

1 Daikin Altherma™ Troubling Shooting

2 2 Code: 81 Part: Outlet water thermistor Location: Activation failure: Possible action to resolve the problem: –Check connector –Check resitance value –Replace thermistor Outlet thermistor failure R3T

3 3 Freeze up problem Code: 89 Part: Heat exchanger freez-up Activation failure: Outlet water temp. too low Location: Possible action to resolve the problem: –Check water flow in the system. Minimum water flow system 9liter / min. R3T

4 4 Freeze up problem Code: Part: Refrigerant liquid sensor Location:Liquid pipe hydrobox Activation failure: Temperature liquid sensor too low. Possible action to resolve the problem: –Check refrigerant charge of the installation

5 5 Flow failure Code: 7H Part: Flow failure Location: Activation failure: Flow switch open during operation (no signal) Possible action to resolve the problem: –Check water flow in the system. (Minimum water flow system 20liter / min.) –Check water pressure in the installation. (Minimum 0.3 bar) –Check shutt OFF valves –Is water system purged –Check pressure drop and speed of the waterpump –Check pump operation R3T

6 6 Outlet water temperture too high Code: 8H Part: Outlet water thermistor Location: Outlet back up heater Activation failure: If outlet water > 65°C Possible action to resolve the problem: –Check if contactor(s) back up heater is not welded –Check if thermistor is not damaged –Check if correct resistor value of thermistor Procedure :Refer to service manual R3T

7 7 Indoor PCB failure Code: A1 Part: Indoor PCB Location: Switchbox Activation failure: Possible action to resolve the problem: –Replace PCB

8 8 Insufficient cooling or heating Code: A5 Part: Liquid sensor hydrobox Location: Possible action to resolve the problem: –Check water flow in the system. (Minimum water flow system 9liter / min.) –Check water pressure in the installation. (Minimum 0.3 bar) –Check shutt OFF valves –Is water system purged –Check pressure drop and speed of the waterpump –Check refrigerant charge –Check thermistor Procedure: refer to service manual R3T

9 9 Booster heater thermal protector Code: AA Part: Thermal protector booster heater or back up heater * Location: Possible action to resolve the problem: –Check if thermal protection is not damaged. –Check contactor of the electric BUH / BSH

10 10 Stucked flow switch Code: CO Part: Flow switch failure Activation failure: Flow swith remains closed when pump is not operating Location: Possible action to resolve the problem: –Check for dirt in flow switch –Replace part is required R3T

11 11 Heat exchanger thermistor failure Code: C4 Part: Liquid sensor Activation failure: Sensor broken or out of range Location: Possible action to resolve the problem: –Check connector –Check resistance of the sensor –Procedure: refer to servicemanual for procedure –If damaged replace part R3T

12 12 Outdoor PCB failure Code: E1 Part: Outdoor PCB failure Activation failure: Location: Possible action to resolve the problem: –Out of control of CPU Voltage drop Power loss Noise on power supply –Defect outdoor PCB

13 13 Overload activation of compressor Code: E5 Part: Overload protector compressor Activation failure: Failure If overload protector ( >130°C) is activated twice in one hour Location: Outdoor unit Possible action to resolve the problem: –Refrigerant shortage. –Malfunction four way valve. –Outdoor PCB failure. –Electronic expansion valve defective.

14 14 Compressor start up failure Code: E6 Part: Compressor locked Activation failure: : Failure, if error occurs 16 times, counter reset if compressor runs normal for 5 minutes Location: Outdoor unit Possible action to resolve the problem: –Replace outdoor PCB –Replace compressor

15 15 Fan motor failure Code: E7 Part: Outdoor fan motor Activation failure: Failure, if error occurs 16 times, counter reset if compressor runs normal for 5 minutes Location: Outdoor unit Possible action to resolve the problem: –Fan motor breakdown –Bad contact between PCB and fan motor –Blockage of the fan blades

16 16 Overcurrent failure Code: E8 Part: Compressor overcurrent Activation failure: Failure, if current (>30 Amp) occurs 16 times. Counter reset if compressor runs normal for 5 minutes Location: Outdoor unit Possible action to resolve the problem: –Compressor breakdown. –Short-circuit –Defective power transistor. –Defective capacitor on inverter board. –Defective outdoor PCB.

17 17 Cool / Heating switching failure Code: EA Part: four way valve Activation failure: Cooling: if (room temp – liquid temperature) < -10°C Heating: if ( Location: Possible action to resolve the problem:

18 18 Sanitary water too high Code: EC Part: Sanitary tank temperature Activation failure: If temperature sanitary water > 89°C Location: Sensor inside sanitary tank Possible action to resolve the problem: –Check position of sensor in socket –Check if contactor(s) booster heater is not welded –Check if thermistor is not damaged –Check if correct resistor value of thermistor

19 19 Discharge temperature too high Code: F3 Part: Discharge sensor Activation failure: Failure if discharge temperature > 120°C for 6 times Location: Sensor located on the discharge pipe of compressor Possible action to resolve the problem: –Refrigerant shortage. –Malfunction four way valve. –Defective discharge sensor. –Defective EEV driver.

20 20 Too high condensing pressure Code: F6 Part:Sensor outdoor heat exchanger Activation failure: Failure if temperature heat exchanger > 60°C Possible action to resolve the problem: –Faulty outdoor fan –Faulty EEV –Dirty heat exchanger –Faulty thermistor

21 21 Too high condensing pressure Code: FA Part: Activation failure: Possible action to resolve the problem:

22 22 Voltage and current sensor failure Code: H0 Part: Voltage / Current sensor Activation failure: No measurement of current during compressor operation. Possible action to resolve the problem: –Reactor disconnected –Compressor disconnection –Outdoor PCB failure –Compressor defective

23 23 Compressor start up failure Code: H6 Part: Compressor / Outdoor PCB Activation failure: Failure when compressor fails to start 8 times. Possible action to resolve the problem: –Compressor cable disconnected –Compressor –Outdoor PCB –Supply voltage out of voltage specifications

24 24 CT failure Code: H8 Part: Current transformer on outdoor PCB Activation failure: Failure if compressor running freq < 55Hz and CT input < then 0.1V for 4 times Possible action to resolve the problem: –Power transistor defective –Bad or poor electrical contact –Reactor defective –Outdoor PCB

25 25 Outdoor ambient thermistor Code: H9 Part: Thermistor Location Activation failure: Resistance value out of range Possible action to resolve the problem: –Check connector –Check resistance value –Replace thermistor. –Outdoor PCB

26 26 Discharge pipe thermistor Code: J3 Part: Discharge pipe thermistor Location Activation failure: Resistance value out of range Possible action to resolve the problem: –Check connector –Check resistance value –Replace thermistor. –Outdoor PCB

27 27 Outdoor heat exchanger Code: J6 Part: Thermistor Location Activation failure: Resistance value out of range Possible action to resolve the problem: –Check connector –Check resistance value –Replace thermistor. –Outdoor PCB

28 28 Fin thermistor switchbox Code: P4 Part: resitance located on the outdoor PCB Location Activation failure: Resistance value out of range Possible action to resolve the problem: –Outdoor PCB

29 29 Electrical box temperature rise Code: L3 Part: Radiation fin thermistor Location: Outdoor PCB Activation failure: failure if temperature > 85°C and compressor OFF Possible action to resolve the problem: –Defective outdoor fan –Defective Fin thermistor –Defective Outdoor PCB –Heat conductive paste

30 30 Radiation fin temperature rise Code: L4 Part: Radiation fin temperature rise Location: Outdoor PCB Activation failure: failure if temperature > 105°C and compressor ON for 4 times Possible action to resolve the problem: –Defective outdoor fan –Defective Fin thermistor –Defective Outdoor PCB –Heat conductive paste

31 31 Output overcurrent detection Code: L5 Part: Location: Outdoor PCB Activation failure: failure if running current is > then preset value Possible action to resolve the problem: –Defective power transistor –Defective outdoor PCB –Defective compressor –Poor installation condition

32 32 Insufficient gas Code: U0 Part: Location: Outdoor Activation failure: see next slide Possible action to resolve the problem: –Refrigerant shortage –Poor performance of the compressor –Defective electronic expansion valve

33 33 Insufficient gas When an output frequency is exceeds 40 Hz and the input current is less than specified value, the adjustment is made for insufficient gas. When discharge pipe temperature is 45°C higher than target value and the electronic expansion value opening is 480 pulse (max.), the adjustment is made for insufficient gas.

34 34 Low or High volttage detection Code: U2 Part: DC detection circuit Location: Outdoor PCB Activation failure: Low / Over voltage. Failure when low or overvoltage occurs 16 times Possible action to resolve the problem: –Supply voltage not within the specifications –Detection circuit defect –PAM control defective

35 35 Signal transmission error on outdoor PCB Code: U7 Part: CPU & PM1 Location: Outdoor PCB Activation failure: Failure when communication error between outdoor PCB and power module Possible action to resolve the problem: –Replace outdoor PCB

36 36 Thank you for your attention!


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