After several attempts to resolve the DHW/Boiler operation problems we are ordering the diverter motor. We have replace both air vents and now the diverter valve. Both were corroded and defective. After emailing video of the operation to Triangle Tube Tech support they are suggesting we replace the diverter motor. They claim this could have been a succession or problems that started with the diverting valve sticking and then partly stripping the gears inside the motor causing intermittent operation. Arrived onsite to install the new actuator motor as purposed. Began by turning off power to the unit. We then removed the old motor and installed the new OEM Supplied actuator motor. After replacing the actuator motor the boiler continued to have issues and lockout due to high temp. Removed casing on pump and found lose wire attached to capacitor. Pump was extremely hot the touch burning skin. Replaced internal circulator. Filled system back up with water bleeding air as required. Restore