Any measures in order to remove disturbances in your heating system should either be judged or be eliminated by a specialist. Please apply to your installer or approach Heimeier directly.
Radiator does not heat or heats insufficiently only
Possible causes
- The temperature setting of the thermostatic valve is below the actual room temperature
- Air in the radiator
- Heating system supplies either insufficient or no heating energy at all
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Remedies/comments
- External heat influences lead to an increased room temperature. Thus, the thermostatic valve throttles or even stops the hot water supply to the radiator
- Vent the radiator
- Arrange for checking of heating curve, circulation pump, time programme, hot water generator, etc.
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The radiator remains heated up even with a closed thermostatic valve
Possible causes
- In case of a continuous window ventilation (tilted window position) and low outside temperatures, the room temperature drops below the lowest temperature setting on the thermostatic valve
- Valve seat is contaminated or soiled, i.e. the thermostatic head cannot shut off
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Remedies/comments
- Ventilation to be short but intensive
- Have the foreign body removed.
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The thermostatic head cannot be turned or only be moved in a limited manner
Remedies/comments
- Either the blocking or limiting functions must be cancelled.
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Possible causes
- The thermostatic head was internally limited or blocked, e.g. a temperature setting was blocked or a setting range was limited towards a higher or lower level and, therefore, this adjustment cannot be changed from outside
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Room temperature is distinctly below the set temperature
Remedies/comments
- The thermostatic valve with incorporated sensor is covered with curtains, radiator covers or panelling etc.
- The thermostatic valve with incorporated sensor is mounted in vertical position
- The nominal performance of the radiator is insufficient in relation to the size of the room
- The heating system does not supply sufficient energy
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Possible causes
- Take care that the thermostatic valve will be exposed to the circulating air of the room without any obstacle or have a remote sensor or remote dial installed
- Arrange for installation of a remote sensor or remote dial
- Have the heating curve or the radiator performance adapted
- Arrange for checking of heating curve, circulation pump, time programme, heat generator, etc.
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Room temperature is distinctly above the set temperature
Remedies/comments
- The thermostatic valve does not capture the room temperature but is influenced by colder air, e.g. draught
- External heat influences could cause an increase of the room temperature although the thermostatic valve did shut off the supply of hot water to the radiator
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Possible causes
- Take care that the thermostatic valve will be exposed to the circulating air of the room without any obstacle
- Thermostatic valves utilize the external heat supplied free of charge for room heating and, thus save energy
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Noise in the thermostatic valve
Remedies/comments
- Excess differential pressure
- Air in the heating system
- Wrong flow direction passes through the radiator
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Possible causes
- Arrange for reduction of pump pressure or have the hot water distribution checked
- Vent the heating system, refill water
- Arrange for the flow direction to be corrected or have a corresponding valve installed
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