Hot Tub Not Working?

Hot Tub Not Working? Here’s What to Do Next

When your hot tub suddenly stops heating, starts leaking, or trips the electrics, it can be stressful — especially if you’ve got guests or a holiday let.
We’ve already covered the most common faults in our Common Hot Tub Problems Guide, so this article is about what to do next — and when to call in a professional.

🔥 1. Hot Tub Won’t Heat Up

If your spa isn’t heating, it’s often down to low flow, a dirty filter, or a failing heater element.
Quick checks:

• Top up water to above the filter housing.
• Remove or clean the filters.
• Open all jets and air controls.
• Check the display for errors (FLO / DR / DRY / OH).

⚠️ If it still won’t heat — switch it off. Continuing to run a tub with no flow or a faulty heater can cause further damage.

📞 Call us for testing and heater repair across Cornwall. 01209808617 or Whats App: 07774187187

⚡ 2. Hot Tub Not Turning On / Tripping the RCD

Power issues are common and can be dangerous if not handled properly.
Quick checks:

• Ensure the isolator is switched on.
• Check your RCD/RCBO at the fuse board.
• Power the spa down fully for 60 seconds and restart.

If it keeps tripping, it’s usually moisture inside the heater or a failing electrical component.
👉 Don’t keep resetting the breaker — this is one of the quickest ways to cause further damage.

📞 We offer fault finding and safe electrical testing for spa systems across Cornwall.

💧 3. Hot Tub Leaking Water

Small leaks become big problems fast — especially in timber-clad spas or holiday lets.
Common leak points: heater unions, pump fittings, jet bodies, pipe joins.

Quick checks:

• Look for drips at the base or near the pack.
• Check heater unions for weeping seals.
• Isolate power if water is near electrics.

🚨 If you can see water pooling, don’t run the spa.
📞 We can pressure-test, locate and repair leaks before they cause structural damage.

🌀 4. Pump Not Working / Jets Not Working

No flow or weak jets usually means dirty filters, airlocks, or pump failure.
Quick checks:

• Clean or remove filters and retry.
• Bleed the pump gently at the union to release trapped air.
• Check air controls and diverter valves are open.

If the pump hums but doesn’t move water — or is silent — there’s likely a mechanical or electrical fault.
📞 We repair and replace pumps (including LX) on site.

🖥️ 5. Hot Tub Error Codes

Modern spas display codes like FLO, DR, OH, SN, and more. These can point to flow issues, sensor faults, or heater failures.
Quick checks:

• Note the code exactly.
• Clean filters, top up water, and restart.
• If the code returns, don’t force it to run.

💬 Tip: Send us a photo of your error code — it speeds up the diagnosis.

🧰 6. Why Calling Early Saves You Money

Many spa owners keep resetting trips or topping up water to avoid a call-out. But this often turns a small fix into an expensive repair.

✅ Early intervention prevents:

• Pump and heater burnout
• Cabinet or base rot from leaks
• Electrical damage
• Lost income for holiday lets

We offer fast, reliable call-outs across Cornwall — and we actually fix the fault, not just “turn it off and on again.”

📍 Cornwall Hot Tub Repair & Servicing

Whether your spa won’t heat up, trips the power, or leaks water, we’ve got you covered. Hot Tub Repair Page – Hot Tub Servicing Page

📞 01209 808 617 / 07774 187187
✉️ mail@hottubrepairman.co.uk
🌐 www.HotTubRepairMan.co.uk

🧭 Related article: Common Hot Tub Problems (UK Guide) ← internal link to the original blog.

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