Model Aprilaire 700 with manual mode (set to power mode, not bypass). Humidifier works only (fan and water) when I connect two brown wires together to bypass the control. When control is set for test - water is running, but when is set in any number between off and test it makes wery loud sound (kind of machinegun rapidly) like the water line is choking and the red light flashes in the same time. Can be something wrong with the wiring or the control is broken. Please help, a700 is like seasons old. Thanks in advance

Humidifiers - Aprilaire - 700 Humidifier