Identify the current controller separately
Photograph the normal accessible display and exterior identifying label where available. Record the controller model in a component note instead of using it as the generator-set model. Keep the set serial and unit reference attached to every controller photo so the connection remains clear in a multi-unit inventory.
Describe the documented work
Collect the replacement or upgrade invoice and any corresponding service report. State whether the paperwork describes a replacement, repair or configuration change. Do not infer that the entire control system was upgraded because one display was replaced. Include the provider’s stated scope and any open recommendations.
Explain readings and gaps
Record the date of the photographed hour reading and disclose any known meter-history issue. If earlier service documents show different readings, retain them in chronological order with an explanation where available. Do not reset values, clear events or change settings to make the sale package appear more consistent.
Refer functionality questions to evidence
Buyers may ask about control features or communication capability. Provide exact documentation and have qualified personnel confirm equipment-specific questions. A menu label or a generic product brochure is not proof that an option is installed and configured. Mark unverified features as unconfirmed in both the listing and offer notes.