MSPA
MSPA Hot Tubs & Spas Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E1
MSPA spa will not heat; display shows E1 shortly after power‑up or when trying to raise temperature.
Water Temperature Sensor Circuit Fault
E2
MSPA spa stops heating and shows E2; water may feel much hotter or colder than the set temperature.
Overheat Protection / High Temperature Sensor Trip
E3
MSPA spa shows E3 and will not heat; pump may run briefly then stop.
Dry-Run / Low Water Flow Protection
E4
Display shows E4 and heating stops; spa may shut down for safety.
Water Over-Temperature Shutdown
E5
MSPA spa shows E5 and stops heating; sometimes accompanied by pump stopping.
Heater Overload / Thermal Cutout Trip
E6
Display shows E6; spa may not start heating or may shut down unexpectedly.
Water Level / Flow Sensor Fault
E7
MSPA spa shows E7 and will not start the massage/bubble function.
Air Blower Motor Overload or Overheat
E8
Display shows E8; spa may not power up fully or certain functions are disabled.
Internal Control System Communication Error
E9
MSPA spa shows E9 and shuts down; may occur after a power surge or lightning storm.
Overvoltage / Undervoltage Protection
F1
Display shows F1; spa may not heat or may behave erratically.
Primary Temperature Sensor Calibration Error
F2
MSPA spa shows F2; heating may be disabled and temperature readings fluctuate wildly.
Secondary / Backup Temperature Sensor Fault
F3
Display shows F3; spa may shut down or lock out heating.
Heater Relay or Triac Fault
F4
MSPA spa shows F4; pump may not start or may run only briefly.
Circulation Pump Motor Fault
F5
Display shows F5; bubble/air massage function may be disabled.
Air Blower Control Circuit Fault
F6
MSPA spa shows F6; keypad may be unresponsive or random functions activate.
Keypad / Control Panel Fault
F7
Display shows F7; spa may not start or may shut down shortly after startup.
Internal Self-Test Failure
F8
MSPA spa shows F8; heater and pump may be disabled.
Ground Fault / Leakage Current Detection
H1
Display shows H1; spa may continue to run but with limited heating control.
High Temperature Sensor Drift
H2
MSPA spa shows H2 and heating is disabled; water may be very hot.
Critical Overheat Lockout
P1
Display shows P1; filtration pump runs continuously or not at all depending on model.
Filtration Cycle Programming / Pump Control Error
P2
MSPA spa shows P2; bubble or jet function may be locked out during certain times.
Protection Mode / Child Lock or Timer Lock
Symptom
Control panel buttons on MSPA spa are unresponsive or require very hard pressing.
Worn or Contaminated Keypad Membrane
Symptom
Loud whooshing or whistling noise when bubble/air massage is running on MSPA spa.
Air Blower Intake Restriction or Air Channel Obstruction
Symptom
MSPA spa bubble function shuts off after a short time and cannot be restarted immediately.
Air Blower Thermal Protection Cycling
Symptom
MSPA spa displays temperature but water feels much cooler or warmer than indicated, without any error code.
Temperature Sensor Misplacement or Mild Drift
Symptom
MSPA spa experiences excessive vibration or movement when bubbles or pump are running.
Improper Spa Support or Unbalanced Installation
Symptom
MSPA spa filter housing or suction fitting vibrates loudly or rattles during pump operation.
Loose Filter Housing or Suction Fitting
Symptom
MSPA spa heater runs but water heats very slowly or not to the set temperature in cold weather.
Insufficient Heating Capacity vs. Heat Loss
Symptom
MSPA spa inflates but slowly loses air over several hours or days without visible water leaks.
Air Leak in Tub Structure or Valve
Symptom
MSPA spa is leaking water from around the motor/control unit or hose connections.
External Plumbing Leak
Symptom
MSPA spa makes loud grinding or rattling noises during filtration or heating cycles.
Circulation Pump Mechanical Wear
Symptom
MSPA spa powers on but will not heat; temperature never increases even though heater indicator is on.
Open Heater Element
Symptom
MSPA spa trips the household breaker or RCD as soon as it is turned on.
Short Circuit or Ground Fault in Spa Electrical System
Symptom
MSPA spa will not maintain set temperature; water cools down quickly between heating cycles.
Heat Loss / Insulation Inefficiency
Symptom
MSPA spa will not power on at all; no lights or display when plugged in.
No Power / Dead Control System
Symptom
Water in MSPA spa becomes cloudy quickly and has a strong chemical or musty odor.
Water Quality / Sanitation Imbalance
Symptom
Water is leaking from the bottom of the inflatable MSPA tub body, not from hoses or motor unit.
Tub Shell Puncture or Seam Leak
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
MSPA spa will not heat; display shows E1 shortly after power‑up or when trying to raise temperature.
|
Water Temperature Sensor Circuit Fault | View Details |
| E2 |
MSPA spa stops heating and shows E2; water may feel much hotter or colder than the set temperature.
|
Overheat Protection / High Temperature Sensor Trip | View Details |
| E3 |
MSPA spa shows E3 and will not heat; pump may run briefly then stop.
|
Dry-Run / Low Water Flow Protection | View Details |
| E4 |
Display shows E4 and heating stops; spa may shut down for safety.
|
Water Over-Temperature Shutdown | View Details |
| E5 |
MSPA spa shows E5 and stops heating; sometimes accompanied by pump stopping.
|
Heater Overload / Thermal Cutout Trip | View Details |
| E6 |
Display shows E6; spa may not start heating or may shut down unexpectedly.
|
Water Level / Flow Sensor Fault | View Details |
| E7 |
MSPA spa shows E7 and will not start the massage/bubble function.
|
Air Blower Motor Overload or Overheat | View Details |
| E8 |
Display shows E8; spa may not power up fully or certain functions are disabled.
|
Internal Control System Communication Error | View Details |
| E9 |
MSPA spa shows E9 and shuts down; may occur after a power surge or lightning storm.
|
Overvoltage / Undervoltage Protection | View Details |
| F1 |
Display shows F1; spa may not heat or may behave erratically.
|
Primary Temperature Sensor Calibration Error | View Details |
| F2 |
MSPA spa shows F2; heating may be disabled and temperature readings fluctuate wildly.
|
Secondary / Backup Temperature Sensor Fault | View Details |
| F3 |
Display shows F3; spa may shut down or lock out heating.
|
Heater Relay or Triac Fault | View Details |
| F4 |
MSPA spa shows F4; pump may not start or may run only briefly.
|
Circulation Pump Motor Fault | View Details |
| F5 |
Display shows F5; bubble/air massage function may be disabled.
|
Air Blower Control Circuit Fault | View Details |
| F6 |
MSPA spa shows F6; keypad may be unresponsive or random functions activate.
|
Keypad / Control Panel Fault | View Details |
| F7 |
Display shows F7; spa may not start or may shut down shortly after startup.
|
Internal Self-Test Failure | View Details |
| F8 |
MSPA spa shows F8; heater and pump may be disabled.
|
Ground Fault / Leakage Current Detection | View Details |
| H1 |
Display shows H1; spa may continue to run but with limited heating control.
|
High Temperature Sensor Drift | View Details |
| H2 |
MSPA spa shows H2 and heating is disabled; water may be very hot.
|
Critical Overheat Lockout | View Details |
| P1 |
Display shows P1; filtration pump runs continuously or not at all depending on model.
|
Filtration Cycle Programming / Pump Control Error | View Details |
| P2 |
MSPA spa shows P2; bubble or jet function may be locked out during certain times.
|
Protection Mode / Child Lock or Timer Lock | View Details |
| – |
Control panel buttons on MSPA spa are unresponsive or require very hard pressing.
|
Worn or Contaminated Keypad Membrane | View Details |
| – |
Loud whooshing or whistling noise when bubble/air massage is running on MSPA spa.
|
Air Blower Intake Restriction or Air Channel Obstruction | View Details |
| – |
MSPA spa bubble function shuts off after a short time and cannot be restarted immediately.
|
Air Blower Thermal Protection Cycling | View Details |
| – |
MSPA spa displays temperature but water feels much cooler or warmer than indicated, without any error code.
|
Temperature Sensor Misplacement or Mild Drift | View Details |
| – |
MSPA spa experiences excessive vibration or movement when bubbles or pump are running.
|
Improper Spa Support or Unbalanced Installation | View Details |
| – |
MSPA spa filter housing or suction fitting vibrates loudly or rattles during pump operation.
|
Loose Filter Housing or Suction Fitting | View Details |
| – |
MSPA spa heater runs but water heats very slowly or not to the set temperature in cold weather.
|
Insufficient Heating Capacity vs. Heat Loss | View Details |
| – |
MSPA spa inflates but slowly loses air over several hours or days without visible water leaks.
|
Air Leak in Tub Structure or Valve | View Details |
| – |
MSPA spa is leaking water from around the motor/control unit or hose connections.
|
External Plumbing Leak | View Details |
| – |
MSPA spa makes loud grinding or rattling noises during filtration or heating cycles.
|
Circulation Pump Mechanical Wear | View Details |
| – |
MSPA spa powers on but will not heat; temperature never increases even though heater indicator is on.
|
Open Heater Element | View Details |
| – |
MSPA spa trips the household breaker or RCD as soon as it is turned on.
|
Short Circuit or Ground Fault in Spa Electrical System | View Details |
| – |
MSPA spa will not maintain set temperature; water cools down quickly between heating cycles.
|
Heat Loss / Insulation Inefficiency | View Details |
| – |
MSPA spa will not power on at all; no lights or display when plugged in.
|
No Power / Dead Control System | View Details |
| – |
Water in MSPA spa becomes cloudy quickly and has a strong chemical or musty odor.
|
Water Quality / Sanitation Imbalance | View Details |
| – |
Water is leaking from the bottom of the inflatable MSPA tub body, not from hoses or motor unit.
|
Tub Shell Puncture or Seam Leak | View Details |
No matching codes found
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