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Table 43.

Problem – Water run-off by the outdoor unit, risk of moisture problems in house foundations

Cause

Troubleshooting

Remedy

Insufficient drainage.

During some periods when the outdoor

unit is being defrosted, large amounts

(20-40 L/day) of water can run off.

Drain the ground under and around the

outdoor unit so that it can cope with the

extra amount of water produced

because of defrosting or install a drip

tray with a drainpipe routed to an

indoor drain or gully. NOTE! A heating

cable may have to be installed in the

drainpipe.

Service instructions VMGFC302 – 61

Содержание DHP-A

Страница 1: ...Service instructions DHP A DHP A Opti DHP AL DHP AL Opti DHP C DHP H DHP H Opti DHP H Opti Pro DHP L DHP L Opti DHP L Opti Pro VMGFC302...

Страница 2: ...the applicable warranty is not binding Danfoss A S retains the right to make changes to components and specifications without prior notice 2010 Copyright Danfoss A S The Swedish language is used for t...

Страница 3: ...6 3 Noise information 22 7 Electrical Installation 24 7 1 Cable connection 24 8 Installing accessories additional functions 25 8 1 Room sensor 25 8 2 EVU function 26 8 3 Tariff control 26 8 4 Level s...

Страница 4: ......

Страница 5: ...elivery Self adhesive decals with translation text Must be placed on the manufacturing plate in conjunction with installation Supplied with the heat pump on delivery The Service instructions and Elect...

Страница 6: ...documentation provided Warning hazardous electrical voltage Warning hot surfaces Warning moving parts Warning risk of crushing injury Pipe connections Tap water Heating system Brine Defrosting tank Ex...

Страница 7: ...ply line The heating system s supply line with flow direction from the heat pump to radiators under floor heating or water heater Return line The heating system s return line with flow direction from...

Страница 8: ...rigerant has low toxicity However although the toxicity of the refrig erant is low it can cause injury or be highly dangerous in abnormal circumstances or where deliberately abused Warning Risk of per...

Страница 9: ...authorized electrician and must follow applicable local and national regulations DANGER Hazardous electrical voltage The terminal blocks are live and can be highly dangerous due to the risk of electri...

Страница 10: ...nt heat energy has been produced If the operating pressure switch does not work and the pressure continues to increase in the circuit the high pres sure switch activates when its break pressure is rea...

Страница 11: ...s the heat pump s normal operation is activated this will be indicated in the display window In order to further attract attention the heat pump will not produce hot water The heat pump will initially...

Страница 12: ...e sensor heating system 13 Expansion valve 3 Evaporator insulated 14 Hot water temperature sensor displays maxi mum temperature 4 Reversing valve 15 Control panel for control equipment 5 Supply line s...

Страница 13: ...15 Control panel for control equipment 4 HGW shunt valve 16 Electrical panel 5 Supply pipe sensor heating system 17 Compressor 6 Heating system circulation pump 18 Low pressure switch 7 Auxiliary heat...

Страница 14: ...t water 8 Supply line sensor 9 Heating system circulation pump 10 Auxiliary heating immersion heater 11 Brine in 12 Heating system supply line 13 Brine out 14 Circulation pump brine system 15 Expansio...

Страница 15: ...11 Control panel for control equipment 3 Reversing valve 12 Brine in 4 Evaporator insulated 13 Electrical panel 5 Heating system circulation pump 14 Compressor 6 Supply pipe sensor heating system 15 L...

Страница 16: ...upply line water heater 14 Electrical panel 4 HGW shunt valve 15 Compressor 5 Evaporator insulated 16 Low pressure switch 6 Supply pipe sensor heating system 17 Operating pressure switch 7 Circulation...

Страница 17: ...ve defrosting 16 Electrical panel 5 Exchange valve heating system 17 Heating system supply line 6 Supply line sensor 18 Compressor 7 Heating system circulation pump 19 Low pressure switch 8 Auxiliary...

Страница 18: ...pump 15 Compressor 7 Evaporator 16 Low pressure switch 8 Circulation pump coolant system 17 Operating pressure switches 9 Exchange valve heating system 18 High pressure switch 1 2 3 4 5 6 7 10 11 8 9...

Страница 19: ...2 3 4 5 Figure 10 Outdoor unit and connections Symbol explanation 1 Outdoor unit 5 Cover 2 Cover 6 Connection brine in to outdoor unit 3 Front cover 7 Connection brine out from outdoor unit 4 Stand 8...

Страница 20: ...e separate parts more easily Warning Do not lift heavy equipment alone always use two people for heavy lifting 1 Remove the packaging 2 Detach the front cover by twisting the catch 90 anti clockwise a...

Страница 21: ...10 Disconnect the cables for the following sensors at the electrical panel Supply line 301 302 Hot water 311 312 Top sensor 325 326 11 Unscrew the electrical panel s screws 12 Turn the electrical pan...

Страница 22: ...nscrew the four screws in the corners that hold the water heater s bottom plate Warning Always use two people for heavy lifting 16 Lift off the unit with the water heater pipe and electrical auxiliary...

Страница 23: ...d against any external mechanical damage 0 5m 2 0m Figure 16 Shaft depth for and insulation of collector hoses 6 2 Connection of several brine coils When several brine coils are used for a heat pump i...

Страница 24: ...ent brine coils are distributed from a common collection well All return lines are led back to the well and are equipped with choke valves because the flow of each individual coil must be adjusted 4 3...

Страница 25: ...position so that they do not lie against each other or create vibration bridges Ensure that electrical wiring is not put under strain if it is it creates vibration bridges If possible install the heat...

Страница 26: ...1 Cable connection When the cable is connected to the terminal block a screwdriver is used to open the terminal block see figure below 1 2 3 5 OK 4 Figure 20 Connecting cable to terminal block 24 Ser...

Страница 27: ...increases or decreases with the result depending on whether there is a deficit or surplus of heat The table below shows examples of how the set point for the supply line is affected at CURVE 40 with...

Страница 28: ...s the circulation pump heating circuit which is permitted to run The text EVU STOP is shown in the display when this function is active 1 Break all power supply to the heat pump 2 Remove the front cov...

Страница 29: ...system Always check local rules and regulations before commissioning the heat pump 2 1 3 Figure 21 Level switch in the expansion tank bleed tank Symbol explanation 1 Safety valve 2 Level switch 3 Floa...

Страница 30: ...e falls The heat curve will be adjusted in connection with installation It must be adapted later on however to obtain a pleasant indoor temperature in any weather conditions A correctly set heat curve...

Страница 31: ...ective setting is achieved by changing the CURVE value which leads to fewer starts and longer operating times For a temporary increase or reduction adjust the ROOM value instead 9 3 ROOM If you wish t...

Страница 32: ...oint values that are allowed for the supply tem perature Adjusting the minimum and maximum supply temperatures is particularly important if your home has under floor heating If your house has under fl...

Страница 33: ...rement of the area under the time axis and is expressed in degree minutes The figure below shows the factory settings for the integral values that the heat pump has When the integral value has reached...

Страница 34: ...culation the integral value is forced to either the start value 60 INTEGRAL A1 or to the stop value 0 1 5 2 8 9 3 4 6 7 Figure 26 Conditions for HYSTERESIS to force the integral value to change Positi...

Страница 35: ...URVE 0 is a brine return between 5 C and 15 C at 0 C outdoor temperature 3 Outdoor temperature 4 Set value for DEFR CURVE 20 The value for OUTDOOR STOP corresponds to the fact that the compressor will...

Страница 36: ...lower than OUTDOOR STOP These three settings together create the defrosting curve and all three values have an effect on when defrosting will start even if it is mainly DEFR CURVE 0 and DEFR CURVE 20...

Страница 37: ...s circulation pump RETURN LINE SENSOR Return sensor fault Return temperature Supply line 5 is used Calculated supply tempera ture limited to maximum 45 C HOT WATER SENSOR Fault on sensor for start te...

Страница 38: ...temperature Evaporation temperature 7 8 C lower than incoming brine Superheating 4 8 K temperature difference Radiator circuit 5 10 K temperature difference Brine circuit 2 5 K temperature difference...

Страница 39: ...ause Troubleshooting Remedy 1 Blocked strainer on the brine circuit Check that the strainer is not blocked Clean the strainer if necessary 2 Air in the brine circuit Listen for air in the heat pump an...

Страница 40: ...r the energy requirement 10 Collector too long pressure drop too great Check the length of the collector that is being used and that it is connected in par allel not connected in series if more than 1...

Страница 41: ...rainer is not blocked Clean the strainer if necessary 2 Air in the heating system Listen for air in the heat pump and heat ing system Bleed the heating system according to the installation instruction...

Страница 42: ...ts heat to 10 Incorrectly facing non return valve with too high opening pressure Check the system s direction of flow and that the non return valve is turned the correct way Check that the heat pump s...

Страница 43: ...r incoming supply If not check the fuses in the cabinet Also check that all wiring is secure if screw terminals are used they must be properly tightened if phoenix flat spring terminals are used the c...

Страница 44: ...d check against the ohm table in Measurement points If the read off value does not corre spond with the table only measure the sensor and check the ohm table in Measurement points If the sensor gives...

Страница 45: ...the shut off valves are open That the strainer is not blocked That there is no air in the heating sys tem The circulation pump may have jam med If so open the bleed screw and try to release the paddle...

Страница 46: ...p jammed Bleed the brine circuit according to the installation instructions If the brine pump has jammed there is an integrated shake function that attempts to shake itself loose up to a maximum of 5...

Страница 47: ...too high Using manometer apparatus and ther mometer check what the overheating reading of the unit is Also check that bulb and capillary tube are undamaged and that the bulb is correctly installed If...

Страница 48: ...t the condenser s bleed valve Check that it is completely closed If it is fully closed and still leaks replace it 11 Leak at soldered joint on water heater Locate the leak If there is a leak at the so...

Страница 49: ...ise whistling noise in the heating system Check the heating system Closed valves choke valves adjuster valves or other restrictions in the radia tor system can cause circulation noise Is the heating s...

Страница 50: ...ed by the pressure on the low pressure side ris ing and reaching the pressure on the high pressure side Check at what pressure the valve starts to open If it opens at too low a pressure replace the co...

Страница 51: ...n is started by the hot water sensor Check what the hot water sensor the start sensor shows Is it a plausible actual value Measure the resistance of the sensor check against the ohm table in Measure m...

Страница 52: ...uce the hot water When done read off the temperature on the top sensor and on the start sensor The top sensor should show a tempera ture of around 50 55 C and the start sen sor around 45 48 C If after...

Страница 53: ...ding to the trouble shooting window adjust it If the sensor is defective replace it 7 Heat production is stopped by the HYSTERESIS function If the flow temperature rises as soon as heat production is...

Страница 54: ...rovide it must be adjusted by increasing the heat emitting surface for example If the room requires a higher output than the heating system can provide extend the heating system 13 Changed conditions...

Страница 55: ...adjusted to the customer s requirements wishes Check the ROOM and CURVE MIN MAX CURVE5 CURVE0 CURVE 5 and HEAT STOP settings Adjust incorrect values in the heat pump s control computer ROOM Desired in...

Страница 56: ...sor If AUX HEATER mode is selected and you no longer want it change to AUTO the heat pump then controls both the compressor and auxiliary heater 2 The compressor cannot run due to an alarm Check the a...

Страница 57: ...gher output auxiliary heater Table 35 Problem The auxiliary heater is in operation but not the compressor Cause Troubleshooting Remedy 1 Operating mode AUX HEATER is selected If this operating mode is...

Страница 58: ...hour replace the compressor 7 The compressor runs backwards The incoming phases have the incorrect sequence only applies to 3 phase heat pumps If the compressor runs back wards it will not cope with...

Страница 59: ...hat it does not cut at too high a return tem perature when the highest supply temperature is transmitted Check what the return line sensor shows Is it a plausible actual value If not take a resistance...

Страница 60: ...the expansion valve until the correct value is obtained See separate instructions for cooling techniques If overheating cannot be adjusted with the expansion valve or if the capillary tube bulb is dam...

Страница 61: ...that is being used and that it is connected in par allel not connected in series if more than 1 coil is being used If a longer collector is being used than recommended for the specific heat pump it mu...

Страница 62: ...r sensor is installed according to the installation instructions and that it is correctly calibrated Install according to the instructions and calibrate if necessary Alternatively the outdoor sensor c...

Страница 63: ...tdoor unit is being defrosted large amounts 20 40 L day of water can run off Drain the ground under and around the outdoor unit so that it can cope with the extra amount of water produced because of d...

Страница 64: ...2 0 2 0 2 0 5 0 5 Auxiliary heater 3 step kW 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 Start current3 A 17 11 21 26 28 Fuse A 204 255 326 254 325 40 6 254 325 40 6 324 405 50 6 324...

Страница 65: ...tion pumps 7 The pressure that must not be exceeded outside the heat pump without falling below the nominal flow For the cooling circuit these valves require pipe dimension 40 x 2 4 2 At B0W45 accordi...

Страница 66: ...ary heater 3 step kW 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 Start current3 A 11 21 26 28 Fuse A 254 325 406 254 325 406 324 405 506 324 405 506 Performance10 Heat factor1 kW 5 33 7 51 9 40 11...

Страница 67: ...ed outside the heat pump without falling below the nominal flow For the cooling circuit these valves require pipe dimension 40 x 2 4 2 At B0W45 according to EN14511 including circulation pumps 8 Nomin...

Страница 68: ...liary heater 3 step kW 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 Start current3 A 11 21 26 28 Fuse A 254 325 406 254 325 406 324 405 506 324 405 506 Performance10 Heat factor1 kW 5 33 7 51 9 40...

Страница 69: ...eded outside the heat pump without falling below the nominal flow For the cooling circuit these valves require pipe dimension 40 x 2 4 2 At B0W45 according to EN14511 including circulation pumps 8 Nom...

Страница 70: ...W 0 2 0 2 0 2 0 5 0 5 Auxiliary heater 3 step kW 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 Start current3 A 17 11 21 26 28 Fuse A 204 255 326 254 325 40 6 254 325 40 6 324 405 50 6 3...

Страница 71: ...tion pumps 7 The pressure that must not be exceeded outside the heat pump without falling below the nominal flow For the cooling circuit these valves require pipe dimension 40 x 2 4 2 At B0W45 accordi...

Страница 72: ...1 0 1 0 2 0 2 Auxiliary heater 3 step kW 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 Start current3 A 11 21 26 28 Fuse A 254 325 406 254 325 406 324 405 506 324 405 506 Performance10 Heat factor1...

Страница 73: ...must not be exceeded outside the heat pump without falling below the nominal flow For the cooling circuit these valves require pipe dimension 40 x 2 4 2 At B0W45 according to EN14511 including circula...

Страница 74: ...heater 3 step kW 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 1 5 3 0 4 5 Start current3 A 11 21 26 28 Fuse A 254 325 406 254 325 406 324 405 506 324 405 506 Performance10 Heat factor1 kW 5 33 7 51 9 40 11 0 1...

Страница 75: ...ide the heat pump without falling below the nominal flow For the cooling circuit these valves require pipe dimension 40 x 2 4 2 At B0W45 according to EN14511 including circulation pumps 8 Nominal flow...

Страница 76: ...ed output com pressor kW Rated output circu lation pumps kW Auxiliary heater 3 step kW Start current3 A Fuse A Performance10 Heat factor1 kW 5 33 7 51 9 40 COP1 4 04 4 34 4 24 Heat factor2 kW 5 38 7 4...

Страница 77: ...ressure that must not be exceeded outside the heat pump without falling below the nominal flow For the cooling circuit these valves require pipe dimension 40 x 2 4 2 At B0W45 according to EN14511 incl...

Страница 78: ...V 230 Rated output com pressor kW 3 2 3 6 4 5 5 5 Rated output circ pumps fan kW 0 4 0 6 0 6 0 7 Auxiliary heater 3 step kW 1 5 3 0 4 5 Start current16 A 11 21 26 28 Fuse A 253 324 405 253 324 405 32...

Страница 79: ...give variations in results Tolerances in the measurement methods can also give variations 1 For A2W35 according to EN14511 including circulation pumps and outdoor units 9 The pressure that must not be...

Страница 80: ...ted output com pressor kW 3 2 3 6 4 5 5 5 Rated output circ pumps fan kW 0 3 0 3 0 4 0 6 Auxiliary heater 3 step kW 1 5 3 0 4 5 Start current16 A 11 21 26 28 Fuse A 253 324 405 253 324 405 323 404 505...

Страница 81: ...tions in results Tolerances in the measurement methods can also give variations 1 For A2W35 according to EN14511 including circulation pumps and outdoor units 9 The pressure that must not be exceeded...

Страница 82: ...output com pressor kW 3 2 3 6 4 5 5 5 Rated output circ pumps fan kW 0 4 0 6 0 6 0 7 Auxiliary heater 3 step kW 1 5 3 0 4 5 Start current16 A 11 21 26 28 Fuse A 253 324 405 253 324 405 323 404 505 323...

Страница 83: ...ber of circulation pumps which can give variations in results Tolerances in the measurement methods can also give variations 1 For A2W35 according to EN14511 including circulation pumps and outdoor un...

Страница 84: ...pressor kW 3 2 3 6 4 5 5 5 Rated output circ pumps fan kW 0 3 0 3 0 4 0 6 Auxiliary heater 3 step kW 1 5 3 0 4 5 Start current16 A 11 21 26 28 Fuse A 253 324 405 253 324 405 323 404 505 323 404 505 Pe...

Страница 85: ...of circulation pumps which can give variations in results Tolerances in the measurement methods can also give variations 1 For A2W35 according to EN14511 including circulation pumps and outdoor units...

Страница 86: ...VMGFC302...

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