Sunbeam Heating pad Four lights flashing

Typical symptoms

Fault area and what the code does not prove

Separate the manufacturer-defined condition from components that still need exact-model diagnosis.

Safe next steps

1. 1
   Confirm the exact Sunbeam Heating pad Four lights flashing model and displayed code before taking action.
2. 2
   Keep the appliance in a safe state and use only the external checks named in the official source.
3. 3
   If the condition remains, stop and arrange qualified service; do not open panels or bypass a safety device.

Step-by-step diagnosis

1. 1
   Photograph the complete Four lights flashing display before changing controls or removing power
2. 2
   Confirm that the full model number is covered by this scope: Sunbeam Heat to GO model 1503 only; do not apply this entry to another Sunbeam model unless its official manual explicitly groups that model
3. 3
   Confirm that the observed condition matches the published meaning: Sunbeam Heat to GO model 1503: the controller has detected an unsupported battery type.
4. 4
   Confirm that the full model number is covered by this scope: Sunbeam Heat to GO model 1503 only
5. 5
   do not apply this entry to another Sunbeam model unless its official manual explicitly groups that model
6. 6
   Published check — Turn the rechargeable Heat to GO controller off, remove the batteries, and confirm all cells are rechargeable NiMH AA batteries installed in the correct orientation
7. 7
   Published check — Do not continue with mixed or unsupported cells
8. 8
   Use the result as the decision point: if the documented condition is corrected, complete only the source-listed check
9. 9
   if Four lights flashing remains, stop and move to exact-model diagnosis
10. 10
    Published check — If Four lights flashing returns after the listed action, do not repeat the same correction indefinitely

What to do

1. 1
   Turn the rechargeable Heat to GO controller off, remove the batteries, and confirm all cells are rechargeable NiMH AA batteries installed in the correct orientation
2. 2
   Do not continue with mixed or unsupported cells
3. 3
   If Four lights flashing returns after the listed action, do not repeat the same correction indefinitely
4. 4
   continue with exact-model diagnosis
5. 5
   If Four lights flashing returns after the listed action, do not repeat the same correction indefinitely; continue with exact-model diagnosis

Action details

Preventive maintenance

• 1
  Keep charging contacts clean and dry, store and charge the battery within the specified temperature range, and use only approved charging accessories
• 2
  If Four lights flashing begins recurring despite the documented maintenance, stop repeating the same action and request exact-model diagnosis
• 3
  Sunbeam Heat to GO model 1503 only
• 4
  do not apply this entry to another Sunbeam model unless its official manual explicitly groups that model — Four lights flashing: store and operate only as specified by the matching official manual

Frequently asked questions