Upon arrival home owner explained to tech that the heat wasn't working tech looked for a code unit wasn't showing a code tech had the system put into heat mode once tech heard the noise that the home owners are talking about tech found that it was from the system trying to ignite. The system came on immediately tech had re set the system multiple times. Each time the system kicked on and ran properly. Tech checked the igniter, blower, heat exchanger, gas valve and pressure switch tech found all of them to be working properly. Tech let the system run for 30 minutes system is blowing out 125 degree air. The system is running properly at this time tech does highly recommends cleaning the blower wheel. Tech switched the system to cool mood and was getting proper readings on the system Technician is to come back Thursday morning to do rec work