Hi, my OH has a faulty Ranco K50-Q6126 thermostat from a Phoenix domestic chiller. (it is also marked 03 0621QA 8; VC532575; K50/K54/K56/K60/K57/K59).

I have been unable to locate a suitable replacement with the same part number (or certainly not a sensible price); Ranco are just directing me to the OEM part number and won't offer any advice. I wondered if a Ranco VB7 would be a suitable replacement please?

My unit measures 60mm long, 30mm wide and 27mm high (excl. output shaft). The thermocouple is 1000mm (1 metre) long, if that helps. It has blue, brown and earth wire connections.

Many thanks.

polybear