Just found the codes in the manual.
C1 means fan speed to low. FO means an internal error, possibly need to replace the pcb. FD means the reset button has been pressed by mistake.
Looks like I need a boiler man out! This aint what you need on a Sunday! :cry:
Yes I have the manual but it doesn't say anything about fault codes which is very strange. When I press and hold the reset button it displays FO or FD?
Yesterday I did notice the pressure gauge had gone down but I sorted that.
Hi really need advice with this please!
I have a bosch RD 532 combi boiler. The CH and hot water are not working. The boiler is around 4 years old and i\\\'ve never had any problems before. The pressure gauge is on 2. The digital display is reading numbers between 15 and 20. It usually reads...