Pool heater repair. Did a systems check on the outside above-ground pool heater. The customer is saying that the unit will not get above 82 degrees, but the unit is functioning properly. I adjusted the gas level through the gas valve with advice from Chris. Cleaned and blew out the gas manifold and into heat exchanger. Tested the volts to the gas valve and ohmed out the pressure switch, and everything had continuity He did say that his pool coded out a couple of days ago, but did not remember which code popped up. The heater was installed 4 years ago, but is a 2017 model. There is only a 1/2” gas feed going into the heater, so that may play a role. I recommend that the customer run the heater after maintenance cleaning, and we can go from there as far as next steps if needed. I will keep in contact with Chris if I need to communicate with another technician regarding this job, if need be I did tighten the packing nut on the outside lawn faucet. This was done as warranty work.