A recent problem has developed that i cant quite get to the bottom of. One of the turbines will not hold its power output. The water pressure remains good and there is no obstruction etc at the jets, so i feel it must be electrical. After 20mins of being on the turbine just stops generating and must be tripping to heater. There is no fault shown on sunnyboy and the other turbine is operating as normal. An inspection revealed damp conditions which i dried up and also some excess grease turned to hard resin on the copper coils, but cleaning up has failed to resolve.
Any advice, thoughts welcomed on this, many thanks