How do I know which hot tub error code guide I need?

Check the brand printed on your pump unit or control panel. Lay-Z-Spa (Bestway) tubs use E01–E09 codes, Intex PureSpa uses E90–E99, MSpa uses E0/E1 plus older HEF/FEF/BBF codes, and CleverSpa uses letter codes like FC, HL, SL and SH. Pick your brand below to jump to the matching fix guide.

Do all inflatable hot tubs use the same error codes?

No. Each manufacturer uses its own system, so the same fault shows a different code on each brand. For example, a blocked-filter water-flow fault is E02 on a Lay-Z-Spa, E90 on an Intex, E1/F1 on an MSpa and often FC on a CleverSpa. Always match the code to the correct brand.

What is the most common hot tub error code?

Across every brand, the most common error is a water-flow fault caused by a dirty or clogged filter. It is usually the cheapest to fix — clean or replace the filter, clear the grilles and power-cycle the unit at the RCD before assuming the pump has failed.

Hot Tub Error Codes by Brand — Find Your Code Fast

An error code on the control panel is your hot tub telling you exactly what's wrong — but only if you read it against the right brand. Every manufacturer uses its own system, so the same fault shows a completely different code depending on whether you own a Lay-Z-Spa, Intex PureSpa, MSpa or CleverSpa. This page is the quick index: find your brand, see what the code means, and jump to the full step-by-step fix guide.

💡 Not sure which brand you have? Look at the pump/heater unit (the box the tub plugs into) — the brand name is almost always printed on it or on the control panel. Once you know the brand, the code below tells you where to look.

Choose Your Brand

Lay-Z-Spa / Bestway — codes E01, E02, E03, E04, E06, E08 etc.
Intex PureSpa — codes E90, E94, E95, E96, E97, E98, E99
MSpa — E0/F0, E1/F1 (newer) plus HEF, FEF, BBF (older)
CleverSpa — letter codes FC, HL, SL, SH plus A1–A4

Own a current MSpa Oslo, Mono-ECO or Tuscany? Use the model-specific repair guide for the different jet, bubble and control-box layouts.

Same Fault, Different Code — A Cross-Brand Cheat Sheet

One of the most confusing things about inflatable hot tubs is that an identical underlying problem shows up as a totally different code on each brand. Here's how the most common faults translate across the four big UK brands:

No water flow (usually a blocked filter — the #1 fault)

Lay-Z-Spa: E02 — fix guide
Intex PureSpa: E90 / E91 — fix guide
MSpa: E1 / F1 — fix guide
CleverSpa: often FC (filter-clean reminder) — fix guide

On every brand the first move is the same: switch off, unplug at the RCD, remove and clean (or replace) the filter cartridge, clear the inlet/outlet grilles, then restart. In our hard-water coastal area, limescale is a frequent hidden cause.

Water too hot / overheating

Lay-Z-Spa: heater cuts out (often no distinct code) — heating guide
Intex PureSpa: E95 (too hot) / E96 / E98 — fix guide
MSpa: SPH / temperature-high — fix guide
CleverSpa: HL (high-limit / over-temp) — fix guide

Shade the control unit from direct sun, let the water cool, then power-cycle. In a Bournemouth heatwave a tub in full sun can genuinely overheat its control block.

Temperature / flow sensor fault

Lay-Z-Spa: E03 (often), heating faults — fix guide
Intex PureSpa: E99 (sensor) — fix guide
MSpa: SL / SH (sensor low/high) — fix guide
CleverSpa: SH (sensor) — fix guide

A failed thermistor (temperature sensor) usually needs replacing — that's engineer work, but it's an inexpensive part. A drifting sensor can also trigger false "too hot" codes on cool water.

Code Won't Clear After the DIY Checks?

If you've cleaned the filter, cleared the grilles and power-cycled the RCD but the code keeps coming back, it's likely a pump, sensor or control-board fault. We'll match you with a local engineer who works on every brand — Lay-Z-Spa, Intex, MSpa and CleverSpa.

📞 Get a Free Quote

Why the First Step Is the Same on Every Brand

No matter which logo is on your pump, a full power cycle clears the majority of one-off glitches: switch off, unplug at the RCD, wait 30 seconds, plug back in and restart. If the code returns immediately, it's a genuine fault — and the code is pointing you straight at it. Work through your brand's specific guide above rather than guessing.

⚠️ Always isolate power before opening anything Every brand's control unit carries mains voltage and sits right next to water. Before removing covers or testing fuses, switch off and unplug at the RCD. If you're not confident testing electrical components with a multimeter, that's the point to call a local engineer rather than risk it.

Common Repair Costs (All Brands)

Indicative costs in the Bournemouth, Poole & Christchurch area:

Replacement filter cartridges: £8-20 (DIY — fixes most water-flow codes)
Descaling the system: £0-15 DIY, or part of a service
Temperature sensor (thermistor): £15-40 + labour
Thermal fuse / heater element: £10-40 + labour
Pump / flow sensor: £50-120 + labour
Control board (PCB): £80-200 + labour
Typical engineer call-out: £40-80 (often includes the first 30 mins of labour)