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Danfoss District Energy 

VI.GP.P1.02 

DKDHR

Instructions 

 

 

 

VX Solo II

14.0  Troubleshooting

If operating disturbances occur, the following basic features 

should be checked before carrying out actual troubleshooting:

-  the substation is connected to electricity,

-  the strainer on the district heating supply is clean,

-  the district heating flow temperature is at normal level 

      (summer at least 60 °C, winter at least 70 °C),

-  the differential pressure is higher than or equal to the normal

  (local) differential pressure in the district heating network. -  

  If in doubt, ask the district heating plant,

-  there is pressure on the system.

 

14.1 Troubleshooting - Heating

Problem

Possible cause

Solution

No heat

Strainer clogged on DH og HE side 

(radiator circuit).

Clean strainer.

Filter in district heating meter clogged.

Clean the filter (after consulting the 

district heating plant).

Defective differential pressure controller.

Check the functions of the differential 

pressure controller - clean valve seat if 

required.

Defective sensor

Replace sensor

Defektive actuator.

Check the functioning of the actuator.

Defective motor valve - or possibly dirt 

in the valve housing.

Check the functions of the motor valve - 

clean valve housing if required.

Automatic controls wrongly set or defec-

tive - possibly power failure.

Check if the setting of the controller is 

correct - see separate instructions. Check 

the power supply.

Temporary setting of actuator to “man-

ual” control - see instruction on heating 

circuit, manual control.

Pump out of operation.

Check that the pump is receiving power 

and that it runs. Control that there is 

no air in the pump housing - see pump 

manual.

The pump is set at too low speed of 

rotation.

Set the pump at higher speed of rotation 

- see instructions on heating circuit.

Air pockets in the system.

Vent the installation thoroughly.

Uneven heat distribution

Air pockets in the system.

Vent the installation thoroughly.

Supply temperature too high

Wrong setting of automatic controls.

Adjust automatic controls, see instruc-

tions for automatic controls.

Defective sensor.

Replace sensor.

Defective controller. The controller does 

not react as it is should in accordance 

with the instructions.

Call in automatic controls manufacturer 

or replace controller.

Summary of Contents for VX Solo II

Page 1: ...er 18 6 8 VX Solo II H2WS ECL 310 A367 1d 2 HE circuits sec connection for DHW cylinder 19 6 9 VX Solo OP ECL 210 A237 1a 1 HE circuit sec connection for DHW cylinder 20 7 0 Mounting 21 7 1 Variable c...

Page 2: ...ture The stations work at a maximum supply temperature from the district heating network of 110 C and the stations work with a op erating pressure of 16 bar which may put the user at risk of burns fro...

Page 3: ...HE with insulation 4 Differential pressure controller AVPL 5 Strainer 7 Ball valve 8 Circulation pump HE 11 Safety valve HE 2 5 bar 13 Thermometer 14 Pocket for pressure gauge 15 Manometer 16 Expansi...

Page 4: ...HE 11 Safety valve HE 13 Thermometer 14 Pocket for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller Danfoss E...

Page 5: ...14 Pocket for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller Danfoss ECL 210 A260 1d 26 Outdoor sensor Danfo...

Page 6: ...VPB F 5 Strainer 7 Ball valve 8 Circulation pump HE 11 Safety valve HE 13 Thermometer 14 Pocket for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for...

Page 7: ...Cylinder 11 Safety valve HE 13 Thermometer 14 Pocket for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller Danf...

Page 8: ...ometer 14 Pocket for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller Danfoss ECL 210 A247 1c 26 Outdoor senso...

Page 9: ...ation pump FH 11 Safety valve HE 13 Thermometer 14 Pocket for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller...

Page 10: ...13 Thermometer 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller Danfoss ECL 310 A367 1d 26 Outdoor sensor Danfoss ESMT 27 Sen...

Page 11: ...1 Safety valve HE 13 Thermometer 15 Manometer 17 Air valve 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 3 4 x 110 mm 25 Controller Danfoss ECL 210 A237 1a 26 Outdoor sensor Danfoss...

Page 12: ...station may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this instruction manual Instructions for...

Page 13: ...station Please note Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this instruct...

Page 14: ...the substation Please note Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this...

Page 15: ...Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this instruction manual Instructi...

Page 16: ...on Please note Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this instruction m...

Page 17: ...the bottom of the substation Please note Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as st...

Page 18: ...ation Please note Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this instructio...

Page 19: ...e substation Please note Your substation may look different than the substation shown as variants with other components may be supplied The control func tion however is basically as stated in this ins...

Page 20: ...ion manual Instructions for the fitted components will be supplied together with the substation 1 25 29 30 Measurements Dimensions without cover H640 x W440 x D250 mm Dimensions with cover H640 x W500...

Page 21: ...e dimensioning basis re tighten the connections and take the substation into continuous use Please note that the connections may be supplied with EPDM rub ber gaskets in general connection sizes from...

Page 22: ...Mounting height approx 2 5 m above ground Temperature range 50 to 50 C Electrical connections Two wire non polarized can be crossed Sensor cable 2 x 0 4 1 5 mm Connect the cable ends to ECL controlle...

Page 23: ...hut off valves are closed threaded and flanged connections are tightened Adding water to the system 1 Pump must be switched off when water is added to the system 2 Fill heat exchanger and system with...

Page 24: ...controller settings can be changed in accordance with the en closed producer instructions Differential pressure controller PN 16 AVPL Return mounting adjustable setting Alternative differential press...

Page 25: ...rature approx 65 C It is important to keep the supply temperature to the radiators as low as possible the temperature is indicated by thermometer mounted in HE return The room temperature is controlle...

Page 26: ...mmer period The controller settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and...

Page 27: ...T www danfoss com Page 7 DANsK Flow og temperatur regulator med indbygget motorventil AVQM AVQMT www danfoss dk Side 9 DEUTsCh Volumenstrom und Temperatur Regler mit Motorstellventil AVQM AVQMT www da...

Page 28: ...ummer period The controller settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide an...

Page 29: ...e controller with integrated control valve AVQM AVQMT www danfoss com Page 7 DANsK Flow og temperatur regulator med indbygget motorventil AVQM AVQMT www danfoss dk Side 9 DEUTsCh Volumenstrom und Temp...

Page 30: ...trict Energy Instructions VX Solo II H2 ECL 210 260 Safety temperature monitor The floor heating circuit can be supplied with a safety thermostat for protection against overheating Please see enclosed...

Page 31: ...the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and mounting guide for further information We also refer to Danfoss Insta...

Page 32: ...punkts styring AMV 150 www danfoss dk Side 3 DEUTsCh Stellantriebe f r 3 Pkt Eingangssignal AMV 150 www danfoss de Seite 3 sVENsKA Motor f r 3 punktsreglering AMV 150 varme danfoss se Sida 4 NEDERlAND...

Page 33: ...ump heating circuit See chapter 12 on page 48 for more information about circulation pump Domestic hot water TheVX Solo II HWP ECL 210 230 substations are supplied with con nection pipes for domestic...

Page 34: ...roller settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and mounting guide for...

Page 35: ...VQM PN 25 AVQMT PN 25 AVQMT AVT PN 25 ENglIsh Flow and temperature controller with integrated control valve AVQM AVQMT www danfoss com Page 7 DANsK Flow og temperatur regulator med indbygget motorvent...

Page 36: ...st possible speed of rotation setting 1 in due consideration of the electricity consump tion and the heating comfort Factory setting of the selector switch is centre position default Select setting 2...

Page 37: ...settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and mounting guide for further...

Page 38: ...lventil AVQM AVQMT www danfoss de Seite 11 EsPA Ol Regulador de caudal y temperatura con v lvula de control integrada AVQM AVQMT www danfoss es P gina 13 slOVEN INA Regulator pretoka in temperature z...

Page 39: ...pump It is recommended to set the pump at highest speed of rotation set ting 3 before start up Then set the pump at lowest possible speed of rotation setting 1 in due consideration of the electricity...

Page 40: ...ler settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and mounting guide for fur...

Page 41: ...oss 01 2008 1 ENglIsh Actuators for three point control AMV 150 www danfoss com Page 2 DANsK Motorer til 3 punkts styring AMV 150 www danfoss dk Side 3 DEUTsCh Stellantriebe f r 3 Pkt Eingangssignal A...

Page 42: ...supplied with a safety thermostat for protection against overheating Please see enclosed operating instructions Jumo AT Domestic hot water The VX Solo II H2WS ECL 310 A367 substations are supplied wi...

Page 43: ...ller settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and mounting guide for fu...

Page 44: ...emperature controller with integrated control valve AVQM AVQMT www danfoss com Page 7 DANsK Flow og temperatur regulator med indbygget motorventil AVQM AVQMT www danfoss dk Side 9 DEUTsCh Volumenstrom...

Page 45: ...erature in the cylinder is controlled by the Danfoss ECL controller Domestic hot water circulation pump It is recommended to set the pump at highest speed of rotation set ting 3 before start up Then s...

Page 46: ...er settings can be changed in accordance with the en closed producer instructions for the mounted controller See ECL Application Key Box with ECL Comfort 210 310 user guide and mounting guide for furt...

Page 47: ...ant for hating only See photo to the right Manual override AVQM Press and hold the button on the bottom side of the actuator during manual override Instructions AVQM AVQMT PN 16 25 DN 15 50 73695050 D...

Page 48: ...ings which can be select ed with the push button Enclosed photo shows the recommended and alternative pump set tings for system types For further information about pump settings please refer to the en...

Page 49: ...according to the enclosed instructions ALPHA2 GRUNDFOS INSTRUCTIONS Summer operation SubstationwithT Cthermostat In periods without heating demand the pump can be switched of on the switch and the shu...

Page 50: ...easures after maintenance work After maintenance work and before switching the system on again Check that all screwed connections are tight Checkthatallsafetyfeatures covers thatwereremoved havebeen r...

Page 51: ...ce sensor Defektive actuator Check the functioning of the actuator Defective motor valve or possibly dirt in the valve housing Check the functions of the motor valve clean valve housing if required Au...

Page 52: ...ooling Strainer clogged Clean strainer Too small heating surface too small radiators compared to the total heating requirement of the building Increase total heating surface Poor utilization of existi...

Page 53: ...g of the cylinder You may check the specifications of the manufacturer conc cylinder capacity Not enough pressure on the hot water Strainer in cold water meter clogged Clean strainer possibly in consu...

Page 54: ...ntrols wrongly set Check that the controller has been cor rectly set see separate instructions Immersion sensor placed incorrectly Place immersion sensor correctly in ac cordance with the manufacturer...

Page 55: ...ric standard Immunity for residential commercial and light industry EN 61000 6 2 2007 Electromagnetic compatibility Generic standard Immunity industry EN 61000 6 3 2007 Electromagnetic compatibility G...

Page 56: ...Produced by Danfoss Redan A S 09 2011 Danfoss Redan A S Omega 7 S ften DK 8382 Hinnerup Phone 45 87 43 89 43 Fax 45 87 43 89 44 redan danfoss com www redan danfoss dk...

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