Hot Spring error codes
Updated November 2026
Hot Spring spas use different messages depending on the collection and the year – Highlife, Limelight and Hot Spot are not all the same. The tables below are taken from current official Watkins Wellness owner’s manuals and labelled with the series they cover. Jon is Hot Spring factory-trained in California, and we visit these spas in Cornwall.
Type your Hot Spring message into the troubleshooter for the safe checks.
Look up a codeWhat Hot Spring codes mean
Hot Spring spas are made by Watkins Wellness. The messages vary by collection and year, so the tables below are labelled with the official manual they come from. The US manuals say GFCI; in the UK that’s the RCD.
| Code | What it means | What to do |
|---|---|---|
| E2: NO FLOW-CHECK FILTER | No flow, or a pressure-switch error. The heater is off. Official advice: check and clean the filter, then call for service if it is still there. | Clean the filters, check the water level, and look for an airlock after a refill. If E2 comes back, call us. |
| E5: SENSOR FAULT | A control or temperature sensor fault. The heater is off. Official advice: call for service. | Needs an engineer. You can try switching off at the isolator for at least 30 seconds; if it returns, call us. |
| E6: NO HEATER PWR | No heater power detected. The heater is off. Official advice: call for service. | Needs an engineer. |
| E4: PERIPHERAL FAULT | An accessories fault: official wording is that accessories power is off (no salt system, no music, no lights). Call for service. | The tub may still run without those extras. Call us if you want it looked at, or if anything else has stopped. |
| E11–16: COOL ZONE OFFLINE | Cool Zone is reporting an internal fault, so the spa uses its own heater only. Official advice: call for service. Only applies if that accessory is fitted. | The tub should still heat on its own heater. Call us if you want the accessory checked. |
| Protection Mode | A protection-mode screen, not a numbered E-code. Official meaning: a high-limit fault, heater-relay fault or other internal fault. Heater and jets off, circulation on. Call for service. | Switch off at the isolator and call us. Don’t get in if you think the water may be too hot. |
The Highlife and Limelight table follows the official Highlife Collection 2025 Owner’s Manual (Grandee, Envoy, Vanguard, Aria, Sovereign, Prodigy, Jetsetter LX and Jetsetter) and the matching LCD messages in the Limelight Collection 2024 Owner’s Manual (Prism, Pulse, Flash, Flair and Beam). The 2026 Limelight Owner’s Manual, page 36, appears to swap the E4 and E11–16 labels against those earlier official tables; we have followed the Highlife 2025 and Limelight 2024 mapping, which also matches the wording of each alert. Your own manual for the year and collection of your spa comes first.
| Code | What it means | What to do |
|---|---|---|
| *==== on the display, POWER and READY flashing | The pressure switch is open when it should be closed, or it is sensing flow when the jet pump is off. | Clean the filter. The official manual says the switch should reset when flow through the heater is restored. Call us if it keeps happening. |
| ===== on the display, POWER and READY flashing | The pressure switch is closed when it should be open. Official advice: contact an authorised technician. | Needs an engineer. |
| READY icon flashing | A control-sensor problem (open or shorted). Official advice: contact an authorised technician. | You can try switching off at the isolator for at least 30 seconds. If the icon still flashes, call us. |
| ----- (five dashes), POWER icon flashing | The heater high-limit thermostat has tripped, and the official manual says the whole spa may be inoperative. | Switch off at the isolator for at least 30 seconds, then switch back on. Check the filter is clean. If it trips again, call us. |
Hot Spot Collection spas (Rhythm, Relay, Pace, Stride, SX and TX in the 2025 official manual) use these display and indicator messages, not the E2 / E5 / E6 list above. Older Highlife, Limelight and Hot Spot years can show different messages. We could not verify older “F1” or “FLO” codes in the 2025–2026 official manuals we opened, so they are not listed here – check the official manual for your year on Highlife, Limelight or Hot Spot.
Safe checks you can do
The official manuals also describe loosening a pump union after a refill, and working in the equipment compartment. We leave those to an engineer. There are no owner-serviceable parts inside the control box: the official wording is not to open it.
- If the whole spa is dead, check the power and whether the RCD has tripped. Reset it once. If it will not reset, leave it off and call us – or an electrician if the fault is in the supply.
- If a high-limit trip is likely (a flashing power light, or five dashes on a Hot Spot spa), switch off at the isolator for at least 30 seconds, then switch back on.
- Clean the filters and check the water level. Poor flow is the official first check for no-heat and no-flow messages.
- On Highlife and Limelight spas, a ready-indicator that keeps flashing after a 30-second power cut is, officially, a temperature-sensor problem and needs a visit.
- Don’t get in if the spa has gone into protection mode or you think the water may be too hot.
If the message is still there after those checks, call us.
Why the tables are split
- Factory training
- Hot Spring factory-trained in California. That is the wording we already use; it is not a claim to be a Watkins authorised dealer.
- Salt-system messages
- Highlife and Limelight manuals also list salt-system reminders and alerts, only if that accessory is fitted. They are not heater faults. Follow the salt-system manual, or send us a photo of the screen.
If you’re in Cornwall and the official checks have not cleared the message, we can visit. Parts availability varies by collection and year, and we won’t pretend every fault can be repaired. Tell us the collection and a photo of the panel when you ring.
Codes cleared
From 63 reviews on Google
“Thank you for coming out in the rain to repair our hot tub. The new control panel is working fine it was nice to meet you and I will recommend you to my friend and family who have hot tubs it’s Sunday afternoon and we are looking forward to going in the tub with a glass of wine. Thank you once again Mike and Cathy at lanlivery”
“The service provided was excellent. Jon came round the following day after I called and was able to diagnose the fault very quickly, luckily for me it was a blown fuse in the circuit board so was a cheap repair. Can’t fault the fantastic customer service.”
“Jon was a huge help in getting a failed pump replaced in our hot tub. Would highly recommend Jon to anyone for his extremely efficient and friendly service. Thanks again Jon!”
Hot Spring message still showing?
Switch off at the isolator, then ring or WhatsApp us with the message, the collection if you know it, and a photo of the panel.
If your tub is sunk into decking or the ground, or set against a wall, it helps to mention it when you book. If you’re not sure, a photo is fine.
Where we work
We’re based in Tuckingmill, Camborne, covering Mid and West Cornwall, from Bodmin and Newquay to Penzance and everywhere in between. Towns we cover include:
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Somewhere else in Cornwall? Just ask. Every area we cover