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Buderus GB142 radiator water too hot?

kperkins411 Member Posts: 2
I just replaced the fan in my GB 142 due to a 3C/217 error. Its 55F outside and the water is heating to 135 before the thermostat stopped calling for heat. This seems high to me so I checked the return line and it was hot as well ~94F. Does this sound right?
System: 3 zones with GB-142/24 with outdoor reset. Its 10 years old and has been perfect up to now.