The signs are relatively simple. In the event that your heating turns and does not create very little heat, the problem probably comes from the hoses. These clog up over time and no longer allow hot water to reach the heating of this Volvo V50. In this situation, clean the hoses or put new ones. Air pocket in the circuit of the Volvo V50 the problem is that when the heater kicks in the fan works as normal but the vents open and close in an oscillating fashion changing every five seconds or so, as the temp of the engine increases the speed of the vent oscillations slows down but continues. It's annoying. The MCC, manual climate control will have a fan speed switch with 4 speeds and the temperature control ***** go cool to hot. The ECC, electronic climate control will have a slider for infinite fan speeds and the temperature control ***** will have numbered temperature selection. Attached Thumbnails. Check if there's fuel in fuel lines. Tank level sensor can be stuck so you might empty it dry and not even know it You have broken vent flap servos or just need calibration with Volvo diagnostic tool. If both heater hoses are hot, and the radiator is full of coolant, it may be a blend door problem under the dash. The most common reasons a Volvo V50 heater isn't working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. 0 % 31 % of the time it's the Heater Blower Motor 0 % 24 % of the time it's the Thermostat 0 % 18 % of the time it's the Heater Blower Motor Resistor 0 % 27 % of the time it's 2005 Volvo V50 Heater Is Not Working? RepairPal will help you figure out whether it's your Heater Blower Motor, Thermostat, Heater Blower Motor Resistor, or something else. NOhU7.

volvo v50 heater not working