多米尼加采购需求：盐氯化器，卫生

I'm experiencing an issue with my unit that's 4 years old. The temperature readings are incorrect, showing low temperatures despite the fact that it's mid-summer. This is obviously a problem that needs to be addressed immediately. Could you please advise on the potential causes for this issue and suggest how we can proceed with fixing it? I appreciate your prompt attention to this matter as I need a resolution as soon as possible.