Appliance Repair Questions? Ask a Technician for Answers ASAP
Hi, welcome to Just answer .... H91 error code indicates during operation of tank booster heater, and tank booster heater OLP has open circuit. This error is caused due to a Faulty connector connection and/or a Faulty tank booster heater overload protector (OLP) and/or Faulty indoor unit PCB (main).
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