Why does my hot tub not heat up ?
Xavier LabelleFor the spa’s heater to operate properly, significant water flow must be
detected within the heater otherwise you may see the dr or dRY error message
displayed. Once this error message has been displayed, your spa will shut
itself down and requires a manual reset to restart it.
Note: check water level is flowing over the filter freely, filters are clean and not over 2 years old (replace if so) and all jets in the spa are open (shut jets will reduce water flow as it will cause water to back up in the plumbing)
If all the checks have been done and the hot tub still will not heat at all, then the MODE
settings maybe on EC/ECN (ECONOMY) or SL/SLP (SLEEP). These modes will only allow the heater to run within their programmed filtration cycle. Reset back to ST/STD (STANDARD) and this will heat spa back to set temperature.
Spa still does not get to temp then is the heater getting power from the pack? An electrician will measure the heater terminals to see if the heater is getting the required voltage.
UK Spa Buying and Ownership Guide
After reading Why does my hot tub not heat up ?, many customers ask the same practical questions: what hot tub size fits best, how much does a hot tub cost to run, and which model gives the best long-term value in UK weather. The right answer normally comes from comparing insulation quality, jet layout, seating comfort, and ongoing maintenance support, not just headline price.
Canadian Spa Company UK supplies hot tubs, swim spas, saunas, replacement hot tub covers, filters, chemicals and accessories with nationwide delivery. If you are planning to buy a hot tub UK homeowners use year-round, shortlist models by intended use first: daily recovery, social entertaining, or family wellness. Then compare power requirements, cover quality, and service access so ownership stays simple over time.
For clearer next steps, use the links below to compare ranges, check current hot tub prices UK buyers are paying, and book support when needed.