The F5 error that appeared on the display of my stove indicates a problem with too little air from the fan. I browsed the forums in Poland, hoping that the problem had already been widely discussed and that a normal, reasonable, intelligent Pole with a furnace after warranty would not have to spend his hard-earned money on service technicians, by God`s grace.
On this occasion, I would like to describe how I dealt with the F5 fault on my own.
An additional motivation was, of course, a call to the Viessmann service and hotline. The service estimated the removal of the fault at PLN 220, inspection of the furnace +, as the service technician stated, replacement of the rubber for PLN 178, each hour started PLN 90. The man from the hotline quoted 20% more and warned that the error may be the result of rainfall and moisture in the chimney, and the fan may have to be replaced, price PLN 720 net. The Viessmann Zis service technician in Krakow even stated that regardless of this error, due to the lack of a reported inspection, it may be, for example, the insulating lining of the combustion chamber which somehow affects the operation of the PARANOJA fan.
To the point. The cause of the error is actually a plastic plate that is lifted by the fan when the stove is started.
List of tools needed for repair.
PH2 Phillips screwdriver,
4mm Allen key
5mm Allen key
Frog type key.
A sharp knife or other thin metal tool to pry it off.
A delicate brush for cleaning dust
Two hands
One head
1) Disconnect the 230V power supply to the furnace
2) Remove the white casing from the top of the stove (no tools needed)
3) Unscrew the two Allen screws at the bottom of the galvanized burner housing and remove it from the upper slings
4) Remove the galvanized housing from the upper black pins
5) turn the two red pins on the sides of the module that block the automation. We lower the module by gently pulling its top towards us. Then
6) IMPORTANT!! We block the gas flow, visible after removing the casing and turning the automation, the yellow shut-off valve, turn it so that it is perpendicular to the pipe.
7) Unplug the two air hoses to the pressure switch
8) Unplug the fan`s electrical cables (two harnesses: power supply and control)
9) Unscrew the screw and pull out the black plug
10) Unscrew the large nut with a frog, being careful not to drop the gas seal when unscrewing it. After unscrewing the nut, move it to the left onto the pipeline.
11) Holding the fan module from the bottom, unscrew 2 5mm Allen keys.
12) Remove the module and set it aside.
13) Under the Aluminum cover, where the 5mm Allen keys are, the target of our activities is the Fan Flap. Or as Viessmann calls it, the throttle.
14) Using a sharp knife, gently pry it from all four sides and pull the throttle down.
15) After removing it, we must clean it thoroughly with a brush. Move gently. You can additionally wipe the chamber covered by the throttle. When we are sure that the throttle is clean, we reassemble everything in the reverse order.
16) After assembly, turn on the stove.
I hope that I have helped all those who would like to, but are a little afraid to repair the stove themselves after the warranty. To all those who are fed up with pseudo service technicians and specialists who shout PLN 500 for 30 minutes of work under the guise that we allegedly bought a Mercedes, which in fact breaks down as often as a Polonez.
On this occasion, I would like to describe how I dealt with the F5 fault on my own.
An additional motivation was, of course, a call to the Viessmann service and hotline. The service estimated the removal of the fault at PLN 220, inspection of the furnace +, as the service technician stated, replacement of the rubber for PLN 178, each hour started PLN 90. The man from the hotline quoted 20% more and warned that the error may be the result of rainfall and moisture in the chimney, and the fan may have to be replaced, price PLN 720 net. The Viessmann Zis service technician in Krakow even stated that regardless of this error, due to the lack of a reported inspection, it may be, for example, the insulating lining of the combustion chamber which somehow affects the operation of the PARANOJA fan.
To the point. The cause of the error is actually a plastic plate that is lifted by the fan when the stove is started.
List of tools needed for repair.
PH2 Phillips screwdriver,
4mm Allen key
5mm Allen key
Frog type key.
A sharp knife or other thin metal tool to pry it off.
A delicate brush for cleaning dust
Two hands
One head
1) Disconnect the 230V power supply to the furnace
2) Remove the white casing from the top of the stove (no tools needed)
3) Unscrew the two Allen screws at the bottom of the galvanized burner housing and remove it from the upper slings
4) Remove the galvanized housing from the upper black pins
5) turn the two red pins on the sides of the module that block the automation. We lower the module by gently pulling its top towards us. Then
6) IMPORTANT!! We block the gas flow, visible after removing the casing and turning the automation, the yellow shut-off valve, turn it so that it is perpendicular to the pipe.
7) Unplug the two air hoses to the pressure switch
8) Unplug the fan`s electrical cables (two harnesses: power supply and control)
9) Unscrew the screw and pull out the black plug
10) Unscrew the large nut with a frog, being careful not to drop the gas seal when unscrewing it. After unscrewing the nut, move it to the left onto the pipeline.
11) Holding the fan module from the bottom, unscrew 2 5mm Allen keys.
12) Remove the module and set it aside.
13) Under the Aluminum cover, where the 5mm Allen keys are, the target of our activities is the Fan Flap. Or as Viessmann calls it, the throttle.
14) Using a sharp knife, gently pry it from all four sides and pull the throttle down.
15) After removing it, we must clean it thoroughly with a brush. Move gently. You can additionally wipe the chamber covered by the throttle. When we are sure that the throttle is clean, we reassemble everything in the reverse order.
16) After assembly, turn on the stove.
I hope that I have helped all those who would like to, but are a little afraid to repair the stove themselves after the warranty. To all those who are fed up with pseudo service technicians and specialists who shout PLN 500 for 30 minutes of work under the guise that we allegedly bought a Mercedes, which in fact breaks down as often as a Polonez.
