Bestway Hot Tubs & Spas Error Codes

E01

Control panel displays E01 and the pump/heater will not start

Water Flow Protection / No Water Flow Detected

E02

Control panel displays E02 and heating stops

Water Temperature Sensor / Thermistor Fault

E03

Control panel displays E03 and the heater shuts down

Overheat Protection / High Temperature Trip

E04

Control panel displays E04 and the system will not run

Water Temperature Too Low / Freeze Protection Triggered

E05

Control panel displays E05 and heating is disabled

Dry Heating Protection / No Water in Heater

E06

Control panel displays E06 and the pump/heater stops

Pump Motor Overload / Overcurrent Protection

E07

Control panel displays E07 and spa functions are locked out

Control Panel / Keypad Communication Error

E08

Control panel displays E08 and the spa shuts down

Internal System Error / Control Board Fault

E09

Control panel displays E09 and heating cannot be activated

Heater Relay / Heating Circuit Failure

E10

Control panel displays E10 and bubbles or massage function will not start

Air Blower Overload / Blower Motor Fault

E11

Control panel displays E11 and spa functions are disabled

Ground Fault / Leakage Current Detected (GFCI / RCD Trip)

E12

Control panel displays E12 and the spa will not operate

Low Line Voltage / Power Supply Error

E13

Control panel displays E13 and heating is disabled

Secondary Temperature Sensor Fault (Inlet/Outlet Sensor Mismatch)

E14

Control panel displays E14 and spa functions intermittently stop

Internal Communication / Software Synchronization Error

Symptom

Air bubbles (massage function) are weak or uneven around the spa

Reduced Air Blower Output / Blocked Air Ring

Symptom

Display works but shows flickering or unreadable characters

Display Module / LCD Fault

Symptom

Filter cartridge collapses, deforms, or clogs very quickly

Filter Overload / Incorrect Cartridge Use

Symptom

Foam builds up on the water surface when jets or bubbles are on

Excessive Foaming

Symptom

Jets or suction fittings vibrate loudly or rattle during pump operation

Hydraulic Vibration / Loose Fittings

Symptom

Pump makes loud grinding or squealing noises during operation

Worn Pump Bearings / Damaged Impeller

Symptom

Pump runs but there is little or no water circulation through the spa

Restricted Water Flow / Circulation Problem

Symptom

Scale or white deposits forming on heater, jets, or spa walls

Limescale Buildup

Symptom

Spa leaks water from around the pump/heater unit or hose connections

External Water Leak at Fittings

Symptom

Spa loses air pressure over time (soft walls) but no visible water leak

Air Leak in Inflatable Chamber

Symptom

Spa powers on but will not heat the water (no error code displayed)

Partial Heater Failure / Underheating

Symptom

Spa shuts off unexpectedly after running for a while (no error code)

Thermal Overload / Auto Shutoff

Symptom

Spa trips the household breaker or GFCI as soon as it is turned on

Short Circuit / Ground Fault

Symptom

Spa walls bulge unevenly or lean when filled

Structural Deformation of Inflatable Liner

Symptom

Spa will not power on at all (no lights or display)

No Power / Dead Control Unit

Symptom

Strong chemical or chlorine smell from the spa water

Combined Chloramines / Poor Water Balance

Symptom

Topside control buttons are unresponsive or work intermittently

Keypad / Control Panel Failure

Symptom

Unpleasant musty or moldy smell from spa or cover

Biofilm / Mold Growth

Symptom

Water appears cloudy or milky despite filtration

Poor Water Clarity / Contamination

Symptom

Water backflows or drains unexpectedly when pump is off

Check Valve / Non-Return Failure

Symptom

Water heats very slowly or cannot reach set temperature in cold weather

Insufficient Heating Capacity / Excessive Heat Loss

Symptom

Water leaking from the inflatable spa wall or floor

Puncture or Seam Leak in Spa Liner

Symptom

Water level drops noticeably between uses without visible external leaks

Slow Water Loss / Evaporation or Hidden Leak