Klein Tools KTB1000 error codes
9 codes from the official Klein Tools manual (Portable Power Station KTB1000), each with the manual page.
Applies to: Klein Tools KTB1000.
| Code | What it means | What to do | Service | Manual |
|---|---|---|---|---|
| Battery Malfunction | Flashing means the unit can no longer charge beyond 40% of its original capacity. If the icon stays lit without flashing, the unit has had an unrecoverable failure. | See the manual. | owner | p. 3 |
| COLD Low Temperature | The unit's temperature is below the permissible operating range. The unit is not operational until it returns to the lowest acceptable operating temperature. | Allow the unit to warm to within the permissible operating temperature range before use. | owner | p. 3 |
| HOT High Temperature | The unit's temperature is above its rating, which can result from high loads in a high ambient environment. The unit is not operational until it cools to the permissible operating temperature range. | Stop the load and allow the unit to cool to the permissible operating temperature range before resuming use. | owner | p. 3 |
| LOW Low Voltage Input | The input voltage is below the rating. The unit accepts only inputs that meet each port's specifications. When this icon is lit, the input is not charging the unit. | Confirm the input source supplies a 13V to 30V DC signal as listed in General Specifications. If the voltage is outside this range, the input port shuts off. | owner | p. 3 |
| OL Overload Condition | Shown on the LCD when the power station is overloaded. The green indicators on overloaded ports flash for 10 seconds, and the ports shut down. An overloaded input port shuts off automatically. | Turn off all ports and disconnect all devices, including the charging cord. Check each device's power requirements against the unit's capacity. Reconnect only necessary devices, then turn on the USB, 12V, and/or AC outlets. If the unit will not reset, disconnect everything, wait 2 minutes, then activate the required ports and reconnect devices. | owner | p. 5 |
| OL SURCHARGE | The overload symbol "OL" appears on the display when a port is drawing more power than allowed. The green LED of the overloaded port flashes for 10 seconds to signal the overload. | Turn off all ports. Unplug all devices, including the battery's charging cable. Confirm that each device's maximum power requirement is within the battery's capacity. Reconnect only the necessary devices. Re-enable the USB, 12 V and/or AC outlets to resume charging. If an input port overloads, it shuts off automatically and reactivates once the input source meets the stated requirements. Recharge only with the supplied AC wall charger or the APP port. | owner | p. 11 |
| COLD Température basse (Low temperature) | The unit's internal temperature is below the acceptable operating range. The unit is non-functional until it reaches the lowest acceptable operating temperature. | See the manual. | owner | p. 15 |
| HOT Température élevée (High temperature) | The unit's internal temperature is above its rated temperature, usually from high loads in rising ambient temperature. The unit is non-functional until it cools into the acceptable operating range. | See the manual. | owner | p. 15 |
| LOW Basse tension d'entrée (Low input voltage) | Input voltage is below the rated level. The unit only accepts input voltages within specification, so while this icon is lit the input cannot recharge the unit. | Confirm the input source (such as a solar panel on the APP port) supplies 13 V to 30 V DC. If the voltage is outside this range, the input port turns off and no charging occurs. | owner | p. 15 |
Source: official Klein Tools manual, read 2026-11-05. "Owner" means the manual lists steps you can take; "dealer" means it directs you to authorized service. Fuel, gas and electrical work on generators is for qualified technicians; follow the manual's safety section.