Not hot water could be the check valve in water heater hot outlet stuck or has failed.......
No water to kitchen faucet.....
Hot side probably due to the WH check valve problem
Cold side could be a frozen line...yes a frozen section f line even with the rig roasty--toasty....just depends on where that cold waterline runs.
Turn your water OFF
Disconnect hot water outlet line at water heater and inspect the check valve inside nipple on WH tank. (Check valve is only needed when winterizing bypassing WH when winterizing---if using just remove internals. Get a new one when you need it)
Then disconnect cold water line at kitchen faucet----stick it in a bucket, slowly turn on water and check for flow. Got flow then check faucet for debris at connection and aerator.
No flow.....then find where line is frozen. (there are no isolation valves in system other than AT the components)
