NOVELTY - Installing, commissioning, operating or maintaining a photovoltaic array, comprises: providing at least one photovoltaic module, where at least one photovoltaic module comprises at least one solar cell (18), at least one diode electrically connected to the at least one solar cell, and at least one temperature indication devices in communication with at least a portion of at least one diode and within at least a portion of the photovoltaic modules; and detecting a failure of at least one diode with the temperature indication devices.    USE - The method is useful for installing, commissioning, operating or maintaining the photovoltaic array or module, which is useful for converting light into electricity (all claimed).    ADVANTAGE - The method provides reliable, safe, low cost and effective solutions with visual indication of the temperature of diodes and/or detection of diode failures during installation, commissioning, operation, and/or maintenance of the photovoltaic module, thus assures proper installation, improves output, expedites maintenance, increases safety and/or raises reliability.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) a photovoltaic module for converting light into electricity, comprising: the solar cells; a transparent front sheet disposed over the solar cells; a back sheet opposite the transparent front sheet; at least one electrical circuit (30) connected to the portion of the solar cells and comprising the diodes; and the temperature indication devices in communication with the portion of the diodes, and disposed between the transparent front sheet and the back sheet;    (2) an array of the modules; and    (3) fabricating a photovoltaic module, comprising: providing the solar cells; electrically connecting the electrical circuits to the solar cells; contacting the portion of the electrical circuits with the temperature indication devices; and encapsulating the solar cells, the portion of the electrical circuits, and temperature indication devices between a transparent front sheet and a back sheet.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of an electrical circuit.    Solar cells (18)    Electrical circuit (30)    Bypass diodes (32)    Cell string (52)