What are the blinking codes for a Richmond 6G40PV-40F?

Rheem RTG2 42 Troubleshooting Manual Error Code 99

Following link has power vent troubleshoot resources, with error codes and manuals:
http://waterheatertimer.org/power-vent-water-heater-troubleshoot.html

Rheem/ Richmond series products do not have service manuals posted online

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Following link has troubleshoot manuals and steps:
http://waterheatertimer.org/power-vent-water-heater-troubleshoot.html#honeywell

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Clean arrestor screen
Avoid rheem-Richmond products since they do not post service manuals
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

Gene

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Tom W must have been 'recommended answer' from past answers, and not live answer.
What did Tom's answer say?
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

1) Rheem-Richmond does not post service manuals:
Copy following link to identify service manual by type of gas control valve:
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html#intellivent

2) For lockout, the air intake might be clogged or combustion parts dirty, causing overheating which will break TRD glass vial. Gas control may need to be replaced. Reset gas control by rotating knob to lowest temp for at least 6 seconds.
http://waterheatertimer.org/How-to-troubleshoot-gas-water-heater.html

3) Call Rheem or local service tech.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

1) Type and brand water heater unknown.
Copy following link for Rheem-Richmond tankless error codes:
http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html

2) Question posted under Richmond tank-type power vent.
Error code 24 appears to be Rheem-Richmond tankless water heater.

3) Add a comment with more information about type, brand, age of water heater including what you have tried so far.

4) Call service technician to catch up on required yearly maintenance.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Fastest way to solve water heater problem is call plumber or service technician.

Open following link for typical error codes for intellivent gas valve found on newer Richmond/Rhemm power-vent gas water heaters:
http://waterheatertimer.org/pdf/Intelli-vent-gas-valve2.pdf
http://waterheatertimer.org/pdf/Intellivent-service-manual.pdf

There is no 100% sure way for novice to repair gas water heater.
This is because electrical parts have to ohm-tested using information from service manual that is typically not sent with new water heater.
Also parts have to be cleaned. The gas pressure checked, air in gas line removed, burner tubes and pilot tube and combustion chamber cleaned, burner parts inspected for problems, air intake cleaned, exhaust vent tested.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

Best way for do-it-yourselfer to solve water heater problems is to learn as much as possible about specific model by reading product manual that comes with new heater.
The manual will show error codes.
Then keep up with yearly service recommendations shown in manual.

Hello Mike,
Check gas pressure, burner parts need to be cleaned, check electrical outlet, hot surface igniter is bad

White Rodgers intellivent error code:
http://waterheatertimer.org/How-to-adjust-water-heater-temperature.html#Intellivent
http://waterheatertimer.org/pdf/Intelli-vent-gas-valve2.pdf

Error code says: system in lockout, but you know that.
1) Low gas pressure, no gas to water heater: call gas company to check pressure
2) Hot surface igniter not positioned correctly: inspect and clean burner parts.
http://waterheatertimer.org/images/Reliance-hot-surface-ignite.jpg
3) Low voltage to water heater/ outlet has wrong polarity: Use circuit analyzer on electrical outlet to make sure polarity is correct

Typical power vent manual:
http://waterheatertimer.org/pdf/Reliance-40-50-power-vent.pdf
Cleaning water heater:
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean
http://waterheatertimer.org/pdf/How-to-clean-combustion-chamber.pdf

I have a 40 gal richmond water heater with power vent and had a similar roblem. I call to talk to a tech and he suggested the vacuum switch. I ordered on line. It was $43 plus shipping and I installed it and it did the job. I happy.