I arrived to an installation inspection but was unable to complete it due to a low-voltage issue on the heat pump. Spent a good portion of time fixing issues with the condensate line, then started to troubleshoot the low-voltage issue. I will have to return to run new low-voltage out to heat pump. Found access in the crawlspace to do so. Client had to leave for work so I closed out the call by letting the customer know I would have to return to run new low voltage out to the heat pump.