How to convert a single cooling air conditioner into a heating and cooling air conditioner
Simply put, you need to upgrade the configuration of the single-cooling air conditioner to the configuration of the heating and cooling air conditioner. Under normal circumstances, the cost of modification is not low.
1. First, add fluoride again (it is affirmative);
2. Add "four-way valve and one-way valve" to the outdoor unit condenser;
3. When necessary, add a set of "auxiliary electric heating" system to the indoor unit (the effect will be better);
4. The original cooling and electric control board should be replaced with a "cooling and heating electric control board". In order to reduce the cost, a "modified board" can be used;
5. The indoor and outdoor connection lines also need to be modified (according to the site conditions, the four-way valve needs to be energized);
6. Modification must be carried out on the basis of the idea of no hidden dangers, especially the auxiliary electric heating part, that is, the matching of the electric power and the power cord must be considered, and the "heat insulation during fixation" must be considered;
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