Good day, there is a wall-mounted fan coil in operation General climate, does not signal any error codes on the display, but the cold water valve does not open, although the value is set to + 16C, we checked the water pressure, the dirt filter on the straight pipe, the ball shut-off valves are all normal. The valve remains on the bypass, we conducted a visual inspection of the valve actuator, nothing suspicious was found.
Hello. If during an external examination no damage is detected and the self-diagnostic tools do not show errors, there is only one way out. Contact the company that supplied and installed this equipment. The reasons for the breakdown can be a lot, but, most likely, it's in the electronics. A sensor or an electrical circuit board may fail. In this case, only an expert on the spot will help you.
