Sanden GAU?315EQTA, Service Book

Page 1: ...Sanden Heat Pump Service Technical Book Page 1 of 48 GAUSͲ315EQTA Heat Pump Unit GAUͲA45HPA Tank Unit GAUͲ315EQTA Service Technical Book Heat Pump Unit GAUͲA45HPA Tank Unit GAUͲ315EQTA ...

Page 2: ...otected by one or more patents or registered designs in the name of Sanden Australia Pty Ltd TRADE MARKS Registered trademark of Sanden Australia Pty Ltd Note Every care has been taken to ensure accuracy in preparation of this publication No liability can be accepted for any consequences that may arise as a result of its application ...

Page 3: ...ᴾ ᴾ ᵟᵱᵐᵕᵏᵐᴾ ᴾ ᴾ Ṳᴾᵦᶃᵿᶒᴾᵮᶓᶋᶎᴾᵳᶌᶇᶒᴾᴾᴾᵥᵟᵳᵋᵟᵒᵓᵦᵮᵟᴾ ᵰᶃᶄᶐᶇᶅᶃᶐᵿᶌᶒᴾᵍᴾᵫᵿᶑᶑᴾ ᵰᵕᵒᵒᴾᵍᴾᵕᵏᵓᶅᴾ ᵱᶇᶘᶃᴾᵆᵦᴾᵶᴾᵵᴾᵶᴾᵢᵇᴾ ᵕᵓᵒᴾᶣᴾᵖᵐᵖᴾᶣᴾᵐᵖᵑᴾᾼᾼᴾ ᵵᶃᶇᶅᶆᶒᴾ ᵓᵔᾺᾶᴾ ᵦᶃᵿᶒᴾᵡᵿᶎᵿᶁᶇᶒᶗᴾᵍᴾᵮᶍᶕᶃᶐᴾᵡᶍᶌᶑᶓᶋᶎᶒᶇᶍᶌᴾ ᴾ ᴾ ᴾᴾᵫᶇᶂᴾᵱᶃᵿᶑᶍᶌᴾ 1ᴾ ᵒᵌᵓᾺᾦᴾᵍᴾᵏᵌᵎᵎᶉᵵᴾ ᵢᶃᶊᶇᶔᶃᶐᶃᶂᴾᵦᶍᶒᴾᵵᵿᶒᶃᶐᴾᵲᶃᶋᶎᶃᶐᵿᶒᶓᶐᶃᴾ ᵔᵓḥίᵡᶍᶌᶑᶒᵿᶌᶒᴾᵲᶃᶋᶎᶃᶐᵿᶒᶓᶐᶃὸᴾ ᵭᶎᶃᶐᵿᶒᶇᶍᶌᴾᵬᶍᶇᶑᶃᴾ ᴾᵫᶇᶂᴾᵱᶃᵿᶑᶍᶌᴾ 1ᴾᵘᴾᵑᵖᶂᵠᵆᵟᵇᴾ ᴾ ᴾ Ṳᵲᵿᶌᶉᴾᵳᶌᶇᶒᴾᴾᴾᴾᵥᵟᵳᵋᵑᵏᵓᵣᵯᵲᵟᴾ ᵪᶍᶁᵿᶒᶇᶍᶌᴾ ᶍᶓᶒᶂᶍᶍᶐᴾ ᵲᵿᶌᶉᴾᵡᵿᶎᵿᶁᶇᶒᶗᴾ ᵑᵏᵓᴾᶊᶇᶒᶐᶃᴾ ᵱᶆᵿᶎᶃᴾᴾ ᶁᶗᶊᶇᶌᶂᶐᶇᶁ...

Page 4: ...Sanden Heat Pump Service Technical Book Page 4 of 48 2 Dimension Outlines Hot Water Storage Tank unit GAU 315EQTA ...

Page 5: ...Sanden Heat Pump Service Technical Book Page 5 of 48 Heat Pump Unit GAUͲA45HPA ...

Page 6: ...Water Heater System heats water by transferring the heat from the surrounding air to the water using a refrigerant The refrigerant is heated by a heat exchanger that absorbs heat from the surrounding air Heat Pump Water Heater System System Circuit Diagram Heat pump unit Tank unit hot water storage ...

Page 7: ...f or the blockout time setting HP unit starts when either of 1 2 3 4 5 or 6 above is satisfied Condition to End GC Inlet TH 50o C However operation will not be performed during the time set as the blockout time on the timer setting panel Freeze Prevention Drive To avoid fracture in freezing HP unit starts heating water when the pipes get below the specific temperature while Driving Mode is on incl...

Page 8: ...fter the compressor runs or 30min after defrost drive completes Also if GC Inlet TH 32o C defrost drive does not start End of defrost is determined either by the temperature detected by Defrost TH or by the time passed after start Defrost drive stops when the condition meets one of the determination values Times of Retries at Error Occurrence Number of times to retry recovery when an error is dete...

Page 9: ...er pump 2 8 PROPELLER FAN HP Propeller fan blade 1 9 HP THERMISTOR PT2MͲM51FͲS2 Heat pump control thermistor Pin1 2 Water inlet temperature Pin3 4 Water outlet temperature Pin5 6 Ambient temperature Pin7 8 Refrigerant discharge temperature Pin9 10 Defrost control 1 10 EX VALVE COIL UKVͲA12VͲB Expansion valve coil 1 11 PC28L05 Water circulation pump 1 12 FAN MOTOR SICͲ65FVͲF515 Fan motor 1 13 DRAIN...

Page 10: ... Heat Exchanger GC cooler Fan Evaporator Water Pump Compressor Main PC Board Detachable Water Filter Supplies filtration for water going into HPU It can be taken off for cleaning purpose Water Valve GC Outlet inch male Water Valve GC Inlet inch male Drain Plugs Connector Cover ...

Page 11: ...e 11 of 48 Electrical Components Timer Setting Panel PC Board Panel Housing Front Bezel Sheet Main PC Board Terminal㩷 Block Tank Thermistor Cable Hose Timer Setting Panel Terminal Cover Top Cover Power Supply Earth Connector Cover 3 x M4 Screws ...

Page 12: ...le 3 Temperature 㷄 10 0 10 20 30 40 50 60 70 80 90 100 Thermistor resistance kȍ 276 162 98 3 61 5 39 5 26 1 17 6 12 1 8 54 6 12 4 46 3 30 Defrost thermistor Table 4 Temperature 㷄 10 0 10 20 30 40 50 60 70 80 90 100 Thermistor resistance kȍ 9 39 6 00 3 94 2 64 1 82 1 27 0 91 0 66 0 49 0 37 0 28 0 22 Tank thermistor A Table 5 Temperature 㷄 10 0 10 20 30 40 50 60 70 80 90 100 Thermistor resistance kȍ...

Page 13: ...ion Valve Coil Specifications Part Name EX VALVE COIL UKV A12V B Dielectric strenght AC 1800V 1sec Insulation resistance DC 500 V 100Mȍ OR More Terminal Housing Rated voltage DC 12V 10 Current 0 26 A Phase 20㷄 Coil resistance 46 3 ȍ 20㷄 Insulation grade E Grade ...

Page 14: ...iameter ij27 Inside diameter ij18 Quick fastener type Motor type DC brushless motor Bearing type Underwater slide shaft Direction of rotation CCW Operating position Impeller shaft horizontal Driving power supply Vm 282V DC 40 10 254 䌾395V DC Driving MAX voltage Below 450V Flow variable system Variable rotation rate by PWM Insulation grade E Grade Winding temperature 115㷄 below Fluid temperature 3 䌾㩷...

Page 15: ... refrigerant circuit such as refrigerant pipes heat exchanger compressor pressure switch are not subject for replacement 1 How to Replace Printed Circuit Board 2 How to Replace Timer Setting Panel 3 How to Replace Water Circulation Pump and its P14 O Rings 4 How to Replace Propeller Fan Blade and Fan Motor 5 How to Replace Thermistors 6 How to Replace Expansion Valve Coil 7 How to Replace Drain Pl...

Page 16: ...rcuit Board ԝ Remove Case Reinforcement PS Ԟ Remove Controller Case Cover 1 screw Ԙ Remove Top Panel and Front Panel Retainer 6 screws ԙ Remove Front Panel 5 screws Ԛ Remove Piping Cover 1 screw ԛ Remove Terminal Block Cover 1 screw Ԝ Unscrew Terminal Block 2 screws Ԙ ԙ Ԙ Ԛ ԛ Ԝ ԝ Ԟ ...

Page 17: ... Book Page 17 of 48 Ԡ Remove screws retaining the PCB 6 screws ԡ Pull up the PCB End of Steps To put it back on follow the same steps in back order ԟ Ԡ ԟUnplug all the necessary cable connectors and remove the earth screws 5 screws PCB ...

Page 18: ... Timer Setting Panel to release the snaps off the fitting on the base component Ԛ Pull up Timer Setting Panel to remove it from the base ԙ Ԛ ԛ Take the Timer Setting Panel cable off the PCB Note Remove the screw together with the harness holder 1 screw End of Steps To put it back on follow the same steps in back order Timer Setting Panel ...

Page 19: ...screws ԝ P14 OͲrings also need to be replaced if a water leakage is confirmed on the joints See picture on the left P14 OͲring Water Circulation Pump Pump Cable Connector P14 OͲring ԙ Ԛ Unplug the pump cable connector ԛ Remove Quick Fasters 2 places Ԝ Remove the screws retaining the pump holder to take out the pump unit 2 screws Ԛ Ԝ ԛ End of Steps To put it back on follow the same steps in back or...

Page 20: ... before pulling the cable 2 places ԘRemove Top Panel Front Panel Retainer and Front Panel 11 screws ԙ Remove the fan blade retainer nut Note This nut needs to be turned counter clockwise to remove Ԛ Pull the fan blade forward to take it off the motor Note When attaching the fan blade align the straight part on the through hole on the fan blade refer to identification triangle mark shown above for ...

Page 21: ...sary cable connectors and remove the earth screws And remove the upper casing unit ԙRemove Right Side Panel 8 screws Note The thermistor head touches the copper pipe side Right Side Panel Upper casing unit Discharge thermistor Water outlet thermistor Red mark Water inlet thermistor White mark Defrost thermistor Ambient thermistor Ԙ ԙ Thermistor Clip Copper pipe ...

Page 22: ... 6 How to Replace Expansion Valve Coil Ԙ Remove Top Panel Front Panel Retainer and Front Panel 11 screws ԙ Pull exp valve upwards to take it off Ԛ Take the cable connector off the PCB End of Steps To put it back on follow the same steps in back order ԙ Ԛ ...

Page 23: ...e 23 of 48 7 How to Replace Drain Plugs and P3 O Rings Ԙ Ԙ Grab the drain plug with fingers and twist in clockwise direction ԙ Take off the OͲring on the tip of the drain plug End of Steps To put it back on follow the same steps in back order ԙ ...

Page 24: ...ace Reactor ԙ Remove Case Reinforcement PS Ԛ Remove Reactor Cover 1 screw Ԛ Ԙ Remove Top Panel and Front Panel Retainer 6 screws Ԙ Ԙ ԙ ԛ Remove Reactor screws 3 screws Ԝ Pull off the cable connector End of Steps To put it back on follow the same steps in back order Ԝ ԛ ...

Page 25: ...or less is detected 㩷 㩷 㩷 㩷 HP Outlet Temperature Thermistor Short Circuit Refer to Thermistor diagnostic 㩷 㩷 Resistance See Table 1 in p g 12 E014 When 30degC or less is detected 㩷 㩷 㩷 㩷 HP Ambient Temperature Thermistor Wire Break Refer to Thermistor diagnostic 㩷 㩷 Resistance See Table 2 in p g 12 E015 When 100degC or more is detected 㩷 㩷 㩷 㩷 HP Ambient Temperature Thermistor Short Circuit Refer...

Page 26: ...Correct piping and remove bends and blockings 㩷 freeze on pipes 㩷 㩷 Melt the freeze if any and apply insulation 㩷 Water valve is closed 㩷 㩷 Open water valve 㩷 Stopper valve is closed 㩷 㩷 Open stopper valve 㩷 confirm tank is filled 㩷 㩷 fill tank with water if it is not 㩷 HP Water Outlet Over Temperature 2 Water circulation pump malfunction 㩷 㩷 If Water circulation pump do not start operating even a...

Page 27: ...tch open 㩷 㩷 㩷 㩷 Check Items 㩷 㩷 㩷 㩷 Check on HP connector filter 㩷 㩷 Remove dust if any 㩷 Bends or blockings on HP connection pipes CN7 White Correct piping and remove bends and blockings 㩷 freeze on pipes 㩷 㩷 Check temperature on pipe cover that is exposed to ambient temperature 㩷 Water valve is closed 㩷 㩷 Open water valve 㩷 Stopper valve is closed 㩷 㩷 Open stopper valve 㩷 confirm tank is filled...

Page 28: ...lade do not rotate 㩷 㩷 Put it back on properly if it is not in right position 㩷 Fan blade rotates in higher speed than usual 㩷 㩷 Replace fan motor 㩷 Fan Motor Revolution Error Fan motor malfunction 㩷 㩷 Replace fan motor E073 When less than 150rpm of water circulation pump rotation detected 㩷 㩷 㩷 㩷 Check Items 㩷 㩷 㩷 㩷 Check if pump connector is fallen out or not connected properly CN13 Red Put it b...

Page 29: ...ed in compressor operation control 㩷 㩷 㩷 㩷 Check Items 㩷 㩷 㩷 㩷 Check for HP control PC board connector connection 㩷 㩷 Confirm connector connections 㩷 Error in compressor wiring 㩷 㩷 confirm connection of wire terminals to compressor is in the right order 㩷 Error in connection on power supply terminal block 㩷 㩷 Confirm cable is connected correctly at terminal block 㩷 Check dust being stuck on HP con...

Page 30: ...error 㩷 㩷 Confirm power supply voltage 240 14V 㩷 INV Transient Over Current Error on Hardware inverter PC board malfunction 㩷 㩷 PCB replacement required if same error occurs again after re run of heat pump E112 Over current error detected in compressor operation control 㩷 㩷 㩷 㩷 Check Items 㩷 㩷 㩷 㩷 Check for HP control PC board connector connection 㩷 㩷 Confirm connector connections 㩷 Error in compr...

Page 31: ...pump E114 Error detected inside PC board 㩷 㩷 㩷 㩷 Check Items 㩷 㩷 㩷 㩷 INV Converter Current detection Circuit Error PC Board malfunction 㩷 㩷 PCB replacement required if same error occurs again after re run of heat pump E115 Error detected inside PC board 㩷 㩷 㩷 Check Items 㩷 㩷 㩷 INV Inverter Current Detection Circuit Error PC Board malfunction 㩷 㩷 PCB replacement required if same error occurs again ...

Page 32: ...nection 㩷 㩷 Confirm connector connections 㩷 Error in compressor wiring 㩷 㩷 confirm connection of wire terminals to compressor is in the right order 㩷 Error in connection on power supply terminal block 㩷 㩷 Confirm cable is connected correctly at terminal block 㩷 Power cutoff occurred 㩷 㩷 Check Power supply cable wiring layout 㩷 Power supply voltage error 㩷 㩷 Confirm power supply voltage 240 14V 㩷 I...

Page 33: ...replacement required if same error occurs again after re run of heat pump E125 Error detected inside PC board 㩷 㩷 㩷 㩷 Check Items 㩷 㩷 㩷 㩷 INV Control Circuit Board Power Supply Error PC Board malfunction 㩷 㩷 PCB replacement required if same error occurs again after re run of heat pump E130 Wire break or short circuit detected on thermistor in HP control PC board 㩷 㩷 㩷 㩷 Check Items CN1 White 㩷 㩷 T...

Page 34: ...power supply voltage 240 14V 㩷 Error in connection on power supply terminal block 㩷 㩷 Confirm wire connection on terminal block 㩷 INV Motor Operation Detection Error PC board malfunction 㩷 㩷 PCB replacement required if same error occurs again after re run of heat pump E141 Overload Detected in compressor operation control 㩷 㩷 㩷 㩷 Check Items 㩷 㩷 㩷 㩷 Check for HP control PC board connector connecti...

Page 35: ...㩷 㩷 Confirm connector connections 㩷 noise source is near harnesses 㩷 㩷 Stop operation of all the surrounding electrical products and reboot Heat Pump 㩷 INV Serial Communication Error PC board malfunction 㩷 㩷 PCB replacement required if same error occurs again after re run of heat pump Thermistor Diagnostic Flow Normal Error Check temperature in Parameter Display Mode Error Normal Check thermistor ...

Page 36: ...nd wait for about 1 hour Consider a change of the electricity supply off peak mode Length of power supply hours may be too short for the water heating cycle to cover the hot water consumption Air removing procedure from the heat pump system may be insufficient Open the water drain plugs on the Heat Pump Unit to remove air from water circuit Be careful for burning Filter on cold inlet connector may...

Page 37: ...place filter plug insert screw clockwise 6 Turn inlet water on check to ensure no leak around filter 7 Replace the inside cover and the end cover Removing air from the system Air Removing Process Caution Hot water may come out Be careful not to get the hands burnt Water drain plugs Open the water drain plugs 2 places on the Heat Pump Unit Close the plugs after no air is confirmed in the water Supp...

Page 38: ...ng the daylight saving period the clock setting to the ordinary time not daylight saving time is preferable 1 Switching to Clock Setting Mode Press the Enter key in the Clock Display Mode to switch to the Clock Setting Mode Time Display starts flashing once the mode is switched 2 Setting the Clock The time setting can be adjusted by pressing Up and Down keys Fast forward and rewind are available b...

Page 39: ...his is a mode to compulsorily operate the water heating cycle This mode is to start the Heat Pump operation immediately no matter the timer setting 6 Pump Remote Operation Mode This is a mode to run the water circulation pump This mode is used when you would like to manually remove the air inside the heat pump unit 1 3 2 How to switch to Maintenance Mode Press and hold down Up and Down keys togeth...

Page 40: ...he start time is set the start time display stops flashing The end time display starts flashing at the same time Adjust block out end time Set to the desired end time by using Up and Down keys Setting can be performed only in hour increments not in minutes Set block out end time Press enter key to adjust the desired time setting After the end time is set the start time and end time are displayed f...

Page 41: ...orized in Error History in E shows the generated error code Shown below is the list of the error codes E000 No error generated E010 HP Inlet Temperature Thermistor wire break E011 HP Inlet Temperature Thermistor short circuit E012 HP Outlet Temperature Thermistor wire break E013 HP Outlet Temperature Thermistor short circuit E014 HP Ambient Temperature Thermistor wire break E015 HP Ambient Tempera...

Page 42: ...transient over current error on software converter E113 INV transient over current error on software inverter E114 INV converter current detection circuit error E115 INV inverter current detection circuit error E120 INV power supply over voltage error E121 INV power supply low voltage error E122 INV transient voltage drop detection error E123 INV transient power cutoff detection error 1 E124 INV t...

Page 43: ...and their corresponding item numbers no 00 Tank Thermistor A 10 times larger value to be displayed no 01 no 02 HP Ambient Temperature Thermistor 10 times larger value to be displayed no 03 HP Inlet Temperature Thermistor 10 times larger value to be displayed no 04 HP Outlet Temperature Thermistor 10 times larger value to be displayed no 05 HP Defrost Temperature Thermistor 10 times larger value to...

Page 44: ...atically goes back to the Clock Display Mode when no panel operation is performed for more than 60 seconds Settings in the Drive Setting Mode can be retained even after returning to the Clock Display Mode 1 3 7 Compulsory Operation Mode 1 How to Change Mode Press and hold down UP and DOWN keys together in the Clock Display Mode to show the Block out Time Setting Mode Press Enter key four times to ...

Page 45: ... operation command cannot be retained if returning to the Clock Display Mode The operation will be stopped also when the mode is switched to another 1 4 Programme Initialising This product contains a programme that saves operation data to the flash ROM by detecting a voltage drop Therefore an initialising is necessary when overwriting the programme or changing the setting back to the default at th...

Page 46: ...water from a rainwater tank be conducted before connecting this type of water supply to the system In an area where the water quality is unstable it is necessary to install an anti scale water conditioner to remove scale from the water flowing into the system Use of the system with scale contained in the water can drop the system performance Change of water supply Changing or alternating from one ...

Page 47: ...Sanden Heat Pump Service Technical Book Page 47 of 48 12 Wiring Diagram ...

Page 48: ...Sanden Heat Pump Service Technical Book Page 48 of 48 Memo ...