Hanscraft
Hanscraft 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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COd
Display shows COd or similar; spa appears unresponsive to most buttons.
Control Panel Lock / Child Lock Activated
dr
Display shows dr; heater is disabled and spa may run pumps briefly then stop.
Dry Heater / Insufficient Water Flow Detected
drY
drY error; spa indicates heater is running without adequate water and may shut down completely.
Severe Dry-Fire Condition
F1
Control panel displays F1 and spa functions are disabled or intermittent.
Water Flow Fault / Low Flow Detected
F10
F10 code displayed; spa may not start heating cycle or may shut down shortly after starting.
Heater Dry-Fire / No Water in Heater Tube
F11
F11 error; ozone or auxiliary equipment may not operate correctly.
Ozone Generator / Auxiliary Output Fault
F12
F12 code; spa may not run scheduled filtration cycles or may ignore timer settings.
Real-Time Clock / Programming Error
F2
Display shows F2 and heating is disabled; spa may run pumps but will not heat.
Flow Switch / Pressure Switch Open During Heat Demand
F3
F3 error appears and the heater will not turn on; spa may maintain circulation but no temperature rise.
Heater Relay or Heater Circuit Failure
F4
F4 code displayed; one or more jet pumps will not start or shut off unexpectedly.
Pump Overload or Pump Relay Fault
F5
F5 error appears and the spa may shut down or run erratically, often after power fluctuations.
Control System Communication / Logic Fault
F6
F6 code on display; spa may not respond to keypad commands or may lock up intermittently.
Keypad / Topside Control Panel Fault
F7
F7 error displayed; spa may shut down heating and pumps intermittently.
Voltage Supply Error / Incorrect Line Voltage
F8
F8 code appears; spa may overheat or shut down unexpectedly during long filter or heat cycles.
Overheat Protection / High Limit Trip
F9
F9 error on display; spa may not heat and may show erratic temperature readings.
Water Temperature Sensor Fault (Thermistor Error)
FL1
FL1 code; spa will not heat and may run circulation pump continuously.
Flow Switch Open (No Flow Detected)
FL2
FL2 code; spa may not heat and may show flow switch closed when pump is off.
Flow Switch Closed When It Should Be Open
HL
HL code; heater shuts off and spa may continue to circulate but will not heat.
High-Limit Sensor Trip (Local Overheat in Heater Tube)
OH
Display shows OH; spa shuts down pumps and heater to prevent overheating. Water may feel excessively hot.
Overheat Condition (Water Temperature Above Safe Limit)
P1
Display shows P1 and the primary jet pump does not start or runs only briefly.
Pump 1 Current / Overload Protection
P2
P2 error; secondary jet pump will not run or trips the breaker when activated.
Pump 2 Overcurrent / Short Circuit
P3
P3 code; circulation pump may not run or may be noisy and weak.
Circulation Pump Overload / Low Current
Sn1
Sn1 error; spa may not heat and temperature reading may be missing or incorrect.
Primary Temperature Sensor Open or Shorted
Sn2
Sn2 error; spa may shut down heater and show unstable temperature readings.
Secondary / High-Limit Sensor Fault
Symptom
Air blower does not start or shuts off quickly after starting.
Air Blower Failure / Overheat
Symptom
Buttons on the control panel are unresponsive or trigger the wrong functions.
Keypad Matrix Failure
Symptom
Cabinet panels are warped, discolored, or soft near the base.
Cabinet Water Damage / Structural Degradation
Symptom
Cover is heavy, waterlogged, and difficult to open; condensation dripping from seams.
Waterlogged Spa Cover
Symptom
GFCI breaker trips immediately or shortly after turning the spa on.
Ground Fault / Electrical Leakage
Symptom
Jets are weak or some seats have very little water pressure.
Reduced Jet Flow / Circulation Restriction
Symptom
LED lights flicker, some colors do not work, or lights are completely out.
Spa Lighting Circuit Failure
Symptom
Loud humming from pump but no water movement from jets.
Seized Pump Motor or Air-Locked Pump
Symptom
Ozone indicator is on but there is no visible ozone bubbles from the designated jet or injector.
Ozone Injection Failure
Symptom
Spa does not heat; water stays at ambient temperature even though pumps run normally.
No Heat Condition
Symptom
Spa heats very slowly or cannot reach set temperature, especially in cold weather.
Insufficient Heating Performance
Symptom
Spa is leaking water inside the equipment compartment or under the shell.
Water Leak in Plumbing or Components
Symptom
Spa makes loud banging, knocking, or vibration noises when pumps run.
Hydraulic Vibration / Cavitation or Loose Mounts
Symptom
Spa water is cloudy, foamy, or has a strong odor despite filtration.
Water Quality / Sanitation Problem
Symptom
Spa will not power on at all; no lights on control panel, no pump activity.
No Power / Dead Spa
Symptom
Strong chemical smell or eye/skin irritation when using the spa.
Chemical Imbalance / Off-Gassing
Symptom
Topside control panel display is blank or very dim, but pumps may still operate via service mode.
Display / Keypad Power Failure
Symptom
Water leaking from around individual jets in the spa shell.
Jet Body or Gasket Leak
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| COd |
Display shows COd or similar; spa appears unresponsive to most buttons.
|
Control Panel Lock / Child Lock Activated | View Details |
| dr |
Display shows dr; heater is disabled and spa may run pumps briefly then stop.
|
Dry Heater / Insufficient Water Flow Detected | View Details |
| drY |
drY error; spa indicates heater is running without adequate water and may shut down completely.
|
Severe Dry-Fire Condition | View Details |
| F1 |
Control panel displays F1 and spa functions are disabled or intermittent.
|
Water Flow Fault / Low Flow Detected | View Details |
| F10 |
F10 code displayed; spa may not start heating cycle or may shut down shortly after starting.
|
Heater Dry-Fire / No Water in Heater Tube | View Details |
| F11 |
F11 error; ozone or auxiliary equipment may not operate correctly.
|
Ozone Generator / Auxiliary Output Fault | View Details |
| F12 |
F12 code; spa may not run scheduled filtration cycles or may ignore timer settings.
|
Real-Time Clock / Programming Error | View Details |
| F2 |
Display shows F2 and heating is disabled; spa may run pumps but will not heat.
|
Flow Switch / Pressure Switch Open During Heat Demand | View Details |
| F3 |
F3 error appears and the heater will not turn on; spa may maintain circulation but no temperature rise.
|
Heater Relay or Heater Circuit Failure | View Details |
| F4 |
F4 code displayed; one or more jet pumps will not start or shut off unexpectedly.
|
Pump Overload or Pump Relay Fault | View Details |
| F5 |
F5 error appears and the spa may shut down or run erratically, often after power fluctuations.
|
Control System Communication / Logic Fault | View Details |
| F6 |
F6 code on display; spa may not respond to keypad commands or may lock up intermittently.
|
Keypad / Topside Control Panel Fault | View Details |
| F7 |
F7 error displayed; spa may shut down heating and pumps intermittently.
|
Voltage Supply Error / Incorrect Line Voltage | View Details |
| F8 |
F8 code appears; spa may overheat or shut down unexpectedly during long filter or heat cycles.
|
Overheat Protection / High Limit Trip | View Details |
| F9 |
F9 error on display; spa may not heat and may show erratic temperature readings.
|
Water Temperature Sensor Fault (Thermistor Error) | View Details |
| FL1 |
FL1 code; spa will not heat and may run circulation pump continuously.
|
Flow Switch Open (No Flow Detected) | View Details |
| FL2 |
FL2 code; spa may not heat and may show flow switch closed when pump is off.
|
Flow Switch Closed When It Should Be Open | View Details |
| HL |
HL code; heater shuts off and spa may continue to circulate but will not heat.
|
High-Limit Sensor Trip (Local Overheat in Heater Tube) | View Details |
| OH |
Display shows OH; spa shuts down pumps and heater to prevent overheating. Water may feel excessively hot.
|
Overheat Condition (Water Temperature Above Safe Limit) | View Details |
| P1 |
Display shows P1 and the primary jet pump does not start or runs only briefly.
|
Pump 1 Current / Overload Protection | View Details |
| P2 |
P2 error; secondary jet pump will not run or trips the breaker when activated.
|
Pump 2 Overcurrent / Short Circuit | View Details |
| P3 |
P3 code; circulation pump may not run or may be noisy and weak.
|
Circulation Pump Overload / Low Current | View Details |
| Sn1 |
Sn1 error; spa may not heat and temperature reading may be missing or incorrect.
|
Primary Temperature Sensor Open or Shorted | View Details |
| Sn2 |
Sn2 error; spa may shut down heater and show unstable temperature readings.
|
Secondary / High-Limit Sensor Fault | View Details |
| – |
Air blower does not start or shuts off quickly after starting.
|
Air Blower Failure / Overheat | View Details |
| – |
Buttons on the control panel are unresponsive or trigger the wrong functions.
|
Keypad Matrix Failure | View Details |
| – |
Cabinet panels are warped, discolored, or soft near the base.
|
Cabinet Water Damage / Structural Degradation | View Details |
| – |
Cover is heavy, waterlogged, and difficult to open; condensation dripping from seams.
|
Waterlogged Spa Cover | View Details |
| – |
GFCI breaker trips immediately or shortly after turning the spa on.
|
Ground Fault / Electrical Leakage | View Details |
| – |
Jets are weak or some seats have very little water pressure.
|
Reduced Jet Flow / Circulation Restriction | View Details |
| – |
LED lights flicker, some colors do not work, or lights are completely out.
|
Spa Lighting Circuit Failure | View Details |
| – |
Loud humming from pump but no water movement from jets.
|
Seized Pump Motor or Air-Locked Pump | View Details |
| – |
Ozone indicator is on but there is no visible ozone bubbles from the designated jet or injector.
|
Ozone Injection Failure | View Details |
| – |
Spa does not heat; water stays at ambient temperature even though pumps run normally.
|
No Heat Condition | View Details |
| – |
Spa heats very slowly or cannot reach set temperature, especially in cold weather.
|
Insufficient Heating Performance | View Details |
| – |
Spa is leaking water inside the equipment compartment or under the shell.
|
Water Leak in Plumbing or Components | View Details |
| – |
Spa makes loud banging, knocking, or vibration noises when pumps run.
|
Hydraulic Vibration / Cavitation or Loose Mounts | View Details |
| – |
Spa water is cloudy, foamy, or has a strong odor despite filtration.
|
Water Quality / Sanitation Problem | View Details |
| – |
Spa will not power on at all; no lights on control panel, no pump activity.
|
No Power / Dead Spa | View Details |
| – |
Strong chemical smell or eye/skin irritation when using the spa.
|
Chemical Imbalance / Off-Gassing | View Details |
| – |
Topside control panel display is blank or very dim, but pumps may still operate via service mode.
|
Display / Keypad Power Failure | View Details |
| – |
Water leaking from around individual jets in the spa shell.
|
Jet Body or Gasket Leak | View Details |
No matching codes found
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