fault diagnosis

A solar maintenance assistant in a plastered room looking at the lit display of a charge controller on the wall, a multimeter in one hand with its test leads clipped to the two posts of a single battery on the shelf below.

Solar PV Maintenance and Fault-Finding — Foundation — Uganda

Solar home systems are on roofs across Uganda, in Kampala and in district towns, and Uganda’s renewable energy sector warns that poorly installed systems, often handled by unqualified technicians, fail early. This course teaches the work that keeps a system alive: checking it properly, and finding faults by measuring rather than guessing. You will learn

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Hands connecting a two-gauge manifold held clear of a worn outdoor condensing unit on a wall bracket, a blue hose running from the manifold to the low-side service port in the unit's valve compartment, the red and yellow hoses hanging free.

Refrigeration and Air-Conditioning Service — Foundation — Nigeria

Nigeria loses perishable food and medicine every year where cold storage fails or does not exist, and the cold chain needs trained refrigeration technicians to keep it running. Meanwhile the AC and fridge trade runs in every street, often by guesswork. The disciplined technician is the one employers hire and contract customers pay. You will

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