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Heating (Connect Series)

HEATING

JSJSLW920 - Boiler Switch

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JSJSLW921 - Home Thermostat

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JSJSLW922 - Smart Radiator Valve

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JSJSLW934 - Electric Switch  

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COMMON QUERIES WITH HEATING

                                                                   

ISSUE CAUSE SOLUTION
Electric/boiler switch automatically switches back to OFF when switched ON
  • Faulty device
  • Seek replacement
Boiler switch does not switch on when thermostat target is set high enough  
  • Thermostat is not paired with the boiler switch
  • Communication issue between the thermostat and boiler switch (RF range/interference)
  • Thermostat is not in running mode
  • Clear the memory of both the thermostat and boiler switch and attempt to re-pair them together - How to clear the memory
  • Move the thermostat nearer to the boiler switch and try adjusting the target temperature using the up/down arrows on the device itself (instead of the app)
  • Set thermostat to running mode
When using the app/web app, an error message appears or device target does not change after setting a new target temperature  
  • TRV/electric switch/thermostat did not receive the RF command from the Lightwave Link/Link Plus
  • Device is not paired with the app
Call for heat system has stopped responding (Connect Series Link only)  
  • Communication issue between the Link and a TRV in the CFH setup
  • There is no schedule set on the app/web app for the thermostat
  • Ensure that all TRVs using CFH are within a reasonable distance (15 metres)
  • Consider adding a 15 minute 'off' period in TRV schedules in between schedule target times and have the last schedule end no later than 05:45
  • Check battery levels of each TRV and replace if necessary - any TRVs that have not been connected for a while will disrupt CFH performance
  • Ensure there is a web schedule on the thermostat (this will not be followed but there needs to be one here for time reference)
  • Disable CFH, delete the CFH setup, re-save thermostat and TRV schedules, wait 5 mins, re-create CFH setup and then re-enable CFH (in this order) - Test it is working by raising the target of a TRV
Radiators still seem to be warm/hot when the output of the TRV is 0%
  • Valve pin of the TRV is not fully extended
  
  • Ensure the correct collar is used with the TRV and the radiator
  • Try calibrating the TRV 
TRV operating noise is loud  
  • Motor is not lubricated
  • TRV is not correctly fitted to the radiator
Electric switch, thermostat or TRV intermittently responds to the app/web app schedule (Connect Series only)  
  • Communication issue between the device and the Lightwave Link (RF range/interference)
  • Schedule may not be optimally set
  • Try reducing the distance between the Link and the device and avoid RF interference (metal objects, other RF devices and water)
  • Consider adding a 15 minute 'off' period in schedules in between schedule target times and have the last schedule end no later than 05:45
Thermostat says TIMEOUT when pairing  
  • Communication issue between the device and the Lightwave Link (RF range/interference)
  • Memory could be full on the thermostat
  • Clear the memory of the thermostat and attempt to re-pair - How to clear the memory
  • Move the thermostat nearer to the Lightwave Link/device

 

 

For more information about our heating products, see our heating guide here.