Describe fixed obstacles
Mention tiled panels, fixed toilets and furniture covering the unit. Use ordinary room-side photographs without dismantling contaminated components.
Make the decision concrete
An engineer can explain what access is needed and which work can be considered. A remote symptom cannot guarantee that a repair is possible within the existing enclosure.
A useful distinction
A removable front panel may permit observation without allowing removal of the unit. Explain the opening and fixed obstacles accurately so an assessment does not assume more working space than the enclosure actually provides.