No. An unsuitable environment can be relevant, but it does not explain every performance change. Use the model's stated operating conditions and the actual programme result.
Understanding this situation
Heat-pump dryers differ from older types, so expectations about warm-up and heat also need checking. A warning or persistent abnormal result should not be dismissed automatically because the room feels cold.
A useful next step
Describe the location, recent weather conditions and selected load. Do not apply direct heaters to the cabinet or open sealed components. Seek appropriate advice if the environment falls outside the instructions or the appliance has a safety symptom.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.