Arrived to install uv bulb, perform t stat diagnostics and line set repair Balance for job is $1440.21 Customer has no concerns Supply and install new uv bulb , confirmed uv system proper operation Customer paid Deposit 50% $720.11 via master 5466320720813961 exp-10/23 sec#257 Customer cell number 9143849806 Returned to repair line set insulation Replaced battery Reset unit multiple times Performed electrical diagnostic for outdoor temp sensor Found low om reading outdoor temperature sensor Recommend: Supply and install outdoor temp sensor Customer approved Sensor $555.72 plus tax = $600.87 Sensor charged under electrical diagnostic (-$100 due to the sensor being under warranty) Plus Remaining balance $720.10 Work performed found below : Uv bulb Line set T stat diagnostic Outdoor temp sensor Total balance = $2041.08 Customer paid via master card 5466320720813961 exp-10/23 sec#257 Return asap to install outdoor temp sensor and continue diagnostics