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Inverter board PCB (PWB2)

Pliers

Lock

support

. Clamp together the heads

of the lock supports with pli-
ers, as illustrated.

T24

T22

T29

CNG2

T28

T27

CNO1

CN12

Lock

support

Lock

support

Lock

support

Lock

support

Lock

support

Main

T30

T21

Lock

support

Lock

support

T26

T25

. Remove the PBC inverter

board.

NIBE AMS10

Chapter 7 | Component replacement

Summary of Contents for SPLIT AMS 10

Page 1: ...TEM EN 1821 2 431568 TECHNICAL MANUAL Air water heat pump NIBE AMS10 LEK L E K LEK LE K UN...

Page 2: ......

Page 3: ...on 18 Fan speed 19 Expansion valves EEV 20 Defrosting 25 Oil return 26 Compressor protection 28 Inverter 28 Temperature and low pressure sensor 29 Drain pan heater 30 Pump down function 33 5 Component...

Page 4: ...s on how to facilitate using the product MARKING The CE mark is obligatory for most products sold in the EU regardless of where they are made CE Classification of enclosure of electro technical equip...

Page 5: ...Component locations AMS 10 6 EZ101 UN FM01 CM XL53 EEV XL52 20S TB PWB1 DH QM36 QM37 EB11 GQ1 X1 QN1 GQ10 XL20 QN2 EP1 5 Chapter 2 The heat pump design NIBE AMS10 2 The heat pump design...

Page 6: ...ent locations AMS 10 8 EZ101 LEK EEV H FM01 XL53 EEV C LPT XL52 PWB3 20S PWB2 TB PWB1 63H1 QM36 QM37 GQ1 DH EB11 X1 QN3 GQ10 QN1 CM EB10 XL20 XL20 QN2 EP1 BP8 BP2 NIBE AMS10 Chapter 2 The heat pump de...

Page 7: ...onent locations AMS 10 12 EZ101 LEK EEV H FM01 CM XL53 EEV C LPT XL52 TB 63H1 20S PWB1 PWB2 PWB3 DH QM37 QM36 GQ1 EB11 X1 QN3 GQ10 QN1 EB10 XL20 QN2 EP1 BP2 BP8 7 Chapter 2 The heat pump design NIBE A...

Page 8: ...locations AMS 10 16 EZ101 LEK DH FM02 CM PF3 EEV H LPT XL52 XL53 EEV C 20S 63H1 TB PWB2 PWB1 PWB3 FM01 QM37 QM36 GQ1 GQ2 EB11 X1 QN3 GQ10 QN1 XL20 EB10 EP1 BP2 BP8 NIBE AMS10 Chapter 2 The heat pump...

Page 9: ...S Drain pan heater EB11 DH Fan GQ1 FM01 Fan GQ2 FM02 Control board PWB1 Inverter board PWB2 Filter board PWB3 Terminal block incoming supply and commu nication X1 TB COOLING COMPONENTS Compressor heat...

Page 10: ...Electrical panel COMPONENT LOCATIONAMS 10 AMS 10 6 TB PWB1 UN TB Cable holder AMS 10 8 LEK PWB3 PWB2 TB PWB1 LEK TB Cable holder NIBE AMS10 Chapter 2 The heat pump design 10...

Page 11: ...r Electrical components AMS 10 Compressor heater CH Drain pan heater DH Fuse F Fan motor FM01 Control board PWB1 Inverter board PWB2 Filter board PWB3 Terminal block incoming supply and communica tion...

Page 12: ...PERATURE SENSOR BE1 QN2 GQ1 GQ10 QN1 EEV H BT28 Incoming supply Outdoor moduleAMS 10 6 BP2 BP1 BE1 QN2 GQ1 GQ10 Incoming supply QN1 QN3 EEV H EEV C Outdoor moduleAMS 10 8 AMS 10 12 BT28 Tho A NIBE AMS...

Page 13: ...High pressure pressostat BP1 63H1 Low pressure transmitter BP2 LPT Fan GQ1 FM01 Fan GQ2 FM02 Compressor GQ10 CM Expansion valve heating QN1 EEV H 4 way valve QN2 20S Expansion valve cooling QN3 EEV C...

Page 14: ...sistance k Temperature C DATA FOR SENSOR IN AMS 10 8 12 16 Tho D 0 0 20 40 60 80 30 60 90 120 150 180 210 Resitans k Temperatur C 100 120 140 160 Resistance k Temperature C Tho S Tho R1 Tho R2 0 0 20...

Page 15: ...9 l s 0 19 l s Min flow climate system 100 circulation pump speed de frosting flow 0 15 l s 0 15 l s 0 12 l s 0 09 l s Min flow heating system 0 20 l s 0 20 l s 0 16 l s 0 11 l s Min flow cooling syst...

Page 16: ...MIN SPEED Speed AMS 10 12 16 rps Speed AMS 10 8 rps Speed AMS 10 6 rps State 20 20 12 Cooling mode 25 20 12 Heating mode Min speed during high condensing in heating mode Lowest compressor speed during...

Page 17: ...oil being drained from the compressor During the waiting period the text protection or pro tection mode may be presented in the indoor module s display does not apply to AMS 10 6 START PROCEDURE FOR T...

Page 18: ...BT3 temperature above 48 C the start speed is changed to C rps B min A rps State 3 40 Speed AMS 10 6 Heating mode 15 40 Speed AMS 10 8 15 55 Speed AMS 10 12 16 The compressor speed is locked at A rps...

Page 19: ...d is checked by the low pressure LPT Fan speed LPT Reduction by 10 rpm Higher than 1 1 MPa Maintains the speed Between 1 0 and 1 1 MPa Increase by 10 rpm Below 1 0 MPa Expansion valves EEV Every time...

Page 20: ...ir temperature Tho A C DIP switch SW3 1 ON DIP switch SW3 1 OFF Defrosting range Condition c2 18 15 0 6 31 24 10 F r ngningstemperaturen SST C Uteluftstemperatur Tho A C DIP switch SW3 1 OFF DIP switc...

Page 21: ...A rps or lower The fan is stopped when the fourway valve switches EEV H is fully open and the compressor speed is fixed for 1 minute to prevent low pressure The target speed for the compressor is then...

Page 22: ...er is the lowest is higher than 10 C The outdoor unit goes into protection mode Defrosting diagram AMS10 6 Compr speed FAN 4 way valve ON OFF 1rps 10s Only in defrost operation 10s ON Defrost timing c...

Page 23: ...2rps 5s Allowed when condition meets Fully closed 3s Suction SH target LP control SH 5 C Compr stopped SH control ON ON 80s 90s Defrost timing chart AMS10 8 Defrost end condition fulfilled 500 pulses...

Page 24: ...after defrost condition is fulfilled 66rps 500 2rps 5s Allowed when condition meets Fully closed 3s Suction SH target LP control LP 0 55 MPa OFF SH 5 C Compr stopped SH control ON ON 80s 90s Defrost...

Page 25: ...shold value after 40 seconds after tank defrosting has been activated the compressor stops The additional heat is activated if one of the alternatives is fulfilled The immersion heater sensor BT19 is...

Page 26: ...nutes after the temperature has dropped below 85 C HIGH PRESSURE CONTROL Heating operation AMS 10 6 The speed of the compressor is decreased by 4 rps every 10 seconds when the liquid line sensor BT15...

Page 27: ...decreases by 4 rps every 30 seconds if the low pressure is 0 15 MPa or lower for more than 10 seconds The function is stopped when the low pressure is 0 189 MPa or greater Stopped compressor When one...

Page 28: ...times within 30 minutes the compressor stops with error code E42 Error code only applies to ACVM270 Re start by acknowledging the alarm Temperature and low pressure sensor The outdoor unit s shift ou...

Page 29: ...han or equal to the value A which varies depending on the outdoor temperat ure The value A is calculated using the table below Value A Current outdoor temperature Tho A 4 0 0 C 2 0 0 C to 5 C 0 0 5 C...

Page 30: ...QM37 OTHER AMS10 1 Switch off the power to the outdoor unit for 2 minutes 2 Close the liquid line valve 3 8 QM36 3 Switch on the power to the outdoor unit 4 Press SW1 AMS 10 12 16 SW9 AMS 10 8 see im...

Page 31: ...CNW CNH CNL CNM CNF CNS CNN1 CNN2 CNR CNA1 CNFAN1 CNFAN2 CNPS CNIP CNTH CNB CNU CNG CNE JSW1 SW1 LED2 LED3 LED4 LED5 LED6 LED1 52X1 KN2 KN3 KN4 KN5 KN6 52X2 52X3 52X4 52X5 52X6 J1 J2 J3 J4 J1 J2 J3 J...

Page 32: ...Y CNS RD CNR WH CNA2 RD BL RD BL BL BL BK WH CNA1 WH CNI3 WH CNI2 WH CNG2 O2 BK WH 4A GR 6 5 4 3 2 1 6 5 7 6 5 4 1 4 3 2 1 BR 1 1 3 3 F RD WH WH OR OR Y BL BL BR BR RD RD WH WH BK 6 BK 6 SM1 M M M SM2...

Page 33: ...at 20 C 10 Oil volume Type of oil Size 0 45 l MA68 6 kW 0 68 l 8 kW 0 9 l 12 kW 0 9 l 16 kW Automatic reset temp alarm High hotgas Cut out value high hot gas 85 C 115 C Suction side Accumulator Rotor...

Page 34: ...ston To suction gas From discharge Slide Coil Coil and pilot valve for 4 way valve Slide To condenser From evaporator To suction gas From discharge Guide Valve housing NIBE AMS10 Chapter 5 Component d...

Page 35: ...essure in chamber A 3 The slide moves to the left which changes how the refrigerant moves In this case it runs directly from evap orator to suction gas Power connected A B Vacuum from the suction side...

Page 36: ...3 The slide moves to the right which changes how the refrigerant moves In this case it runs directly from suction gas to condenser NIBE AMS10 Chapter 5 Component description 36...

Page 37: ...TROL BOARD PWB1 The outdoor unit s program is here and all inputs and outputs for the machine s control functions are connected here PWB1 6kW upper side PWB1 6kW underside 37 Chapter 5 Component descr...

Page 38: ...ed LED 1 green Lit Normal condition supply ok LED 1 green Flashes Alarm indication LED 2 red PWB1 8kW underside Dipswitch SW4 LED 3 Only flashes during software programming LED 3 green NIBE AMS10 Chap...

Page 39: ...PWB1 12 16 kW CPU Dipswitch Current sensor LED 2 red LED 1 green Lit Normal condition supply ok LED 1 green Flashes Alarm indication LED 2 red 39 Chapter 5 Component description NIBE AMS10...

Page 40: ...INVERTER PWB2 Controls the voltage to the compressor PWB2 8kW To compressor Power transistor PWB2 12 16 kW To compressor Power transistor NIBE AMS10 Chapter 5 Component description 40...

Page 41: ...SUPPRESSOR FILTER PWB3 PWB3 minimises interruption PWB3 8 kW PWB3 12 16 kW 41 Chapter 5 Component description NIBE AMS10...

Page 42: ...lly closed to fully open Refrigerant Coil Solenoid Needle valve Refrigerant Low pressure transmitter Electric signal Pressure sensitive element Oil Membrane Pipe Pressure from refrigerant NIBE AMS10 C...

Page 43: ...sensor 3 times within 60 minutes LP alarm 221 Defective low pressure transmitter Defective control board in AMS 10 Open circuit or short circuit on input for suction gas sensor Tho S Faulty suction g...

Page 44: ...alve closed Insufficient refrigerant has been detected at start up in cooling operation 1 minute after start up BT15 must have decreased 4K com pared to BT3 Insufficient refri gerant 266 Loose connect...

Page 45: ...ensor section Defective control board in AMS 10 Also see the troubleshooting guide on page 59 Open circuit or short circuit on sensor input The input for the sensor receives unreasonably high or low v...

Page 46: ...an motor running Is the air flow obstructed Is the installation space sufficient 2 During heating Is the indoor module s sensor for the evaporator correctly connected Is the filter clogged If the volt...

Page 47: ...the low pressure transmitter via indoor module in 1 stationary compressor 2 compressor operation Replace the low pressure transmitter NO NO Is the difference less than 0 2 MPa Advance to checking the...

Page 48: ...normal during operation Defective control board replace Open the service valves Action Are the connections to the low pressure transmitter and sensor for suction gas temperature OK Defective low pres...

Page 49: ...rial Replace the fan motor If the resistance between Vm red GND blue is 1 k or lower the motor is defective Does the fan rotate freely when it is turned by hand Is fuse F2 intact Replace the fan motor...

Page 50: ...vent of an alarm Is the filter blocked Is the air circulation obstructed Is the installation space sufficient Is the heat exchanger dirty Replace defective sensor Insufficient amount of refrigerant Ac...

Page 51: ...emperature in the event of an alarm Too much refrigerant Action Replace defective sensor Is the air circulation at the outdoor unit obstructed Is the installation space sufficient Is the evaporator so...

Page 52: ...lation space sufficient During cooling does the fan motor run Are the service valves fully open Is the filter blocked Are the low pressure transmitter and the suction gas sensor OK Does the compressor...

Page 53: ...ection 1 M 0 and the value in creases N P 300 400 k P N 0 Several M and the value rises U P V P W P 1 2 M 650 k U N V N W N 1 3 M 670 k P U 4 4 M P V P W 0 650 k N U 4 8 M N V 4 9 M N W Location of me...

Page 54: ...r board Is there DC 15 V between the switches CNI3 23 on the control board Replace the inverter board NO NO NO NO Is the connection between the inverter board and the control board ok NO Is the voltag...

Page 55: ...oard Is the voltage 15 V DC on the control board side after the switch CNI3 or 1 has been removed Replace the fan motor YES YES YES Has the fault been resolved NO Replace inverter board OK YES Check t...

Page 56: ...RROR Is there DC 15 V between the connectionsCNI3 2 3 on the control board NO Check the power supply Is there DC 15 V when the fan is disconnected YES YES Is the incoming voltage supply ok NO Replace...

Page 57: ...0 V DC OK Is IC2 damaged NO Replace the inverter board YES YES NO 277 S FAULT THO R Is the evaporator s temperature sensor Tho R1 R2 correctly connected YES YES Replace the control board Action Defect...

Page 58: ...teristics of the outdoor sensor Tho A OK NO NO Sensor data can be found on page 14 279 S FAULT THO D Is the hot gas sensor Tho D correctly connected YES YES Replace the control board Action Defective...

Page 59: ...data can be found on page 14 281 SENSOR FAULT LPT Is the low pressure transmitter correctly connected YES NO Replace the low pressure transmitter Has the fault been corrected Action Check the amount o...

Page 60: ...up in order to blow away snow even if the outdoor unit is not currently running Normal OFF SW3 2 DIP switch SW5 AMS10 12 16 Notes Factory setting Switch ON OFF Start delay 5 minutes Start delay 30 mi...

Page 61: ...g 4 May not be changed on on on Japan Export model 1 SW4 on on on 3 phase 1 phase mod el 2 off off off Load measurement 3 off Function test electron ics 4 on on Model setting 4 May not be changed off...

Page 62: ...nel 5 screws Top panel 1 Undo the screws for the top and service panels and remove the panels 2 Undo the five screws and remove the front panel and grille Nuts 3 Undo the nut and remove the propeller...

Page 63: ...he connection to CNFAN 5 Detach the clamp Control unit Tape Fan cabling 6 Remove tape and fan cabling 4 screws 2 metal clamps 7 Detach the two metal clamps 8 Undo the four screws and remove the fan mo...

Page 64: ...ion 1 Undo the straps and re move the external insulation Top insulation Inner insulation Tho D 2 Remove the top and inner insulation 3 Cut off the strap and pull out the sensor Tho D NIBE AMS10 Chapt...

Page 65: ...5 Disconnect the compressor cables U red V white and W blue 6 Remove the gasket Heater 3 nuts for the compressor Earth screw 7 Remove the compressor heater 8 Unscrew and remove the ground cable 9 Undo...

Page 66: ...ion gas and hot gas pipes 11 Remove the compressor Control board PCB PWB1 Control unit Control board PCB NOTE Wait at least three minutes after cut ting the current 1 Remove the top panel 2 Remove the...

Page 67: ...Q1 CNW2 CNTH 4 screws 3 Undo four screws 4 Disconnect all contacts and remove the PCB control board Inverter board PCB PWB2 Inverter board PCB NOTE Wait at least three minutes after cut ting the curre...

Page 68: ...f the lock supports with pli ers as illustrated T24 T22 T29 CNG2 T28 T27 CNO1 CN12 Lock support Lock support Lock support Lock support Lock support Main T30 T21 Lock support Lock support T26 T25 4 Rem...

Page 69: ...2 Cut off the straps 3 Disconnect the contacts CNA2 and CNO2 on the filter board 4 Disconnect and remove the ground cable 5 Disconnect contacts in the following order 1 On the inverter board T21 for T...

Page 70: ...s 1 Remove the four screws and then the fan grille 1 nut 2 Remove the nut and then the fan propeller 2 straps 5 clamps 3 Disconnect contact CN FAN1 4 Detach the five clamps and cut off both straps NIB...

Page 71: ...s 6 Remove the fan motor Compressor CM 4 screws short 4 screws long 1 Remove the service hatch top panel and front hatch 2 Remove the four short and four long screws 3 Remove the panel with the servic...

Page 72: ...g screw 5 Remove the side panel and the rear panel Connection protection 6 Remove the top section of the compressor insulation 7 Remove the nut and re move the connection protec tion 9 Remove the gask...

Page 73: ...e two straps and pull out the sensor Tho D 11 Disconnect the two straps and disconnect the contacts as illustrated CNEEV2 CNEEV1 Screw Strap CNB CNTH CNPS 12 Disconnect the contacts as illustrated 13...

Page 74: ...move the control unit Insulation upper Insulation lower Bolt 2 bolts Heater 16 Remove the compressor s insulation 17 Unscrew the ground cable 18 Remove the compressor heater 19 Remove the bolts holdin...

Page 75: ...as pipe Pipe S hot gas pipe 20 Disconnect the pipes for suction gas and hotgas 21 Remove the compressor Control board PWB1 1 screw 2 straps 1 Remove the screw 2 Cut off the two straps 75 Chapter 7 Com...

Page 76: ...CNB CNTH CNIP CNPS CNFAN1 CNA1 CNR CNS CNH CNS CNR CNA1 CNFAN1 CNPS CNIP CNTH CNB CNW CNA2 CNW2 CNI3 CNI1 CNEEV2 CNEEV1 3 Remove all contacts 6 supports Support 4 Remove the six supports 5 Remove the...

Page 77: ...Control panel PWB2 CNI2 CNI4 To the compressor CNACT1 P1 P2 N1 N2 P3 N3 3 Disconnect the contacts CNI2 CNI4 CNACT1 4 Remove the nine screws 2 screws 9 supports Thermal paste Power transistor 5 Remove...

Page 78: ...d PWB3 6 screws Contact CN1 TB5 TB6 TB8 TB3 TB4 TB7 1 Remove the six screws 2 Disconnect the contact 5 supports 3 Remove the five supports 4 Remove the filter board NIBE AMS10 Chapter 7 Component repl...

Page 79: ...Dimensions AMS 10 6 43 93 640 40 40 12 148 34 89 51 44 290 84 510 327 201 18 800 12 71 352 313 24 15 79 Chapter 8 Technical data NIBE AMS10 8 Technical data...

Page 80: ...0 8 30 30 188 25 750 24 61 340 48 51 12 150 223 310 580 61 150 32 880 88 418 380 19 49 104 Gas pipe Liquid pipe Opening for pipe and wiring Drainage hole Front Above NIBE AMS10 Chapter 8 Technical dat...

Page 81: ...60 580 200 262 38 40 50 370 410 20 40 60 15 60 20 970 50 55 15 845 10 50 110 195 242 279 50 27 50 52 195 110 100 40 51 36 50 150 70 15 50 40 103 15 Opening fo Drainage hole Right 81 Chapter 8 Technica...

Page 82: ...15 1300 113 46 10 50 27 50 50 50 110 195 195 612 624 50 50 110 325 190 60 580 200 265 50 150 70 15 50 40 38 40 50 370 410 20 40 103 60 15 15 60 20 Op Drainage hole Opening Fron Ri NIBE AMS10 Chapter...

Page 83: ...st sound sensitive neighbouring area The sound pressure levels are further affected by walls bricks differences in ground level etc and should therefore only be seen as guide values 2 m LEK AMS 10 16...

Page 84: ...ecommended fuse rating 5 Arms Starting current 6 000 4 380 3 000 2 530 m3 h Max fan flow heating nominal 2X86 86 50 W Fan rating 120 100 110 W Drain pan heater integrated Reverse cycle Defrosting IP24...

Page 85: ...15 10 5 0 5 10 1 00 3 00 4 00 6 00 7 00 8 00 9 00 Uppv rmningskapacitet kW Utomhustemperatur C 35 C 45 C 55 C Outdoor temperature C Heating output kW 0 00 25 20 15 10 5 0 5 10 3 00 4 00 5 00 COP Utomh...

Page 86: ...12 00 14 00 16 00 Uppv rmningskapacitet kW Utomhustemperatur C 35 C 45 C 55 C 15 4 00 2 00 Heating output kW Outdoor temperature C 0 00 25 20 15 10 5 0 5 10 3 00 4 00 5 00 COP Utomhustemperatur C 35...

Page 87: ...kW Capacity AMS 10 12 with 20A fuse rating 0 00 25 20 15 10 5 0 5 10 15 00 Uppv rmningskapacitet vid 20A avs kring kW Utomhustemperatur C 35 C 45 C 55 C 10 00 15 25 00 5 00 20 00 Outdoor temperature...

Page 88: ...oor temperature C Flow pipe Return pipe During shorter time it is allowed to have lower working temperatures on the water side e g during start up 0 10 15 20 25 30 35 40 45 5 10 15 20 25 30 35 Tempera...

Page 89: ...ompressor protection 26 Fan speed cooling operation 18 Fan speed heating operation 19 Pump down 30 Temperature and low pressure sensor 28 Function description AMS 10 16 I Important information 4 Safet...

Page 90: ...Troubleshooting Sensor placement 12 Troubleshooting guide 46 NIBE AMS10 Item register 90...

Page 91: ......

Page 92: ...from NIBE Energy Systems All product illustrations facts and data are based on the available information at the time of the publication s approval NIBE Energy Systems makes reservations for any factu...

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