11/13/2024
Tenant noticed that hot water was not hot anymore. So we had a consult with them over the phone. We walked through some troubleshooting and determined that there was a code being read off with seven flashes and a pause. We did a little research through Rheem and found that the flammable v***r sensor or FVS was detecting flammable gases in the area. So of course you want to do the checks and make sure there’s no spilled flammable liquids, v***rs, etc in the immediate area. Once we determined that everything was safe we reset the unit with the tenants help. The directions are as follows: 1st turn the temp controller off and turn the temperature gauge to low,
Next unplug the unit and wait for for at least one minute.
Then plug the power cord back in to the outlet, afterwards, turn the switch to on and right away (within 30 secs) start turning the k**b from low to hotest setting back and forth 7 times.At this point the unit should turn on or the error codes all remain.
Well the unit initially kicked over but a couple days later the error code came back. We moved the conversation from virtual to in person. What we found is that there was excess moisture on the ground along with some boxes that had discoloration on them, which is the only thing that could have set off the sensor. We cleared the area reset the unit again powered and it powered up one more time, but after that cycle was done it went back into error mode.
We determined that we would replace the FVS but I had to wait till the next day to get part, the part is reasonably priced if you order online but if you need it right away, you’re going to pay a few bucks more. My suggestion is that if you own more than one of these units or service more than one of these units, it’s best is to keep a couple on hand.
Powered down as before, We replaced the FVS and went through the reset process mentioned above. This time it cycled on right away and we waited until it was finished to confirm we had normal standby operations.
The end result is it’s fully operational again. I can’t stress enough that troubleshooting is key so that you’re aware of what you expect when calling out a HVAC or plumber to manage this problem. That way, you’re not forced into just getting ridiculous options like replacing the whole unit or replacing more parts than necessary.