-Replaced transformer in AH-15 per prior approval. AH-15 transformer had been wired as 240v instead of the appropriate 208v. Verified operation of unit. -AH-2 transformer to be replaced at same time as previously diagnosed blower motor. -Replaced outdoor fan capacitor in HP-5, 8, 17 per prior approval. -Replaced compressor contactor in HP-15 per prior approval. Found issue with call from thermostat to contactor. Bypassed time delay relay board and system operates correctly. Disconnected high voltage wires from time delay relay until repair may be made. Provided estimate for replacement of time delay relay board $475.92. Actual part number to be sourced by office.