Water not hit enough out if tankless heater
We have a seasonal cottage we just opened with an Aquastar LP tankless HWH. Pilot lit properly and burners are firing but the hot water is not very hot.
There does not appear to be a problem in the pipes, etc and water pressure is good. Tried the local plumber but it is the weekend so trying to troubleshoot myself. Unit is about 15 years old. any suggestions?