Customer is getting no hot water and tankless water heater is reading error code E003. Spoke with Bradley from customer support had me reset unit. Tried firing up a couple times before igniting was able to get hot water with no error code. Turned tankless water heater off and turned back on unit is firing up right away now. Tested gas pressure getting 9.4 inc wc with pressure drop to 7.3. Getting 5 gpm. Performed tankless water heater service flies head out unit. Thank you for choosing CPI plumbing and heating Note: Customer is not interested in becoming a Kelly's Club Member Service Agreement