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Fig. 46 | Fig. 47 |
D red indicator LED fault
DHW mode
Fig. 48
Heating mode
Fig. 49
B green indicator LED
boiler status
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Fig. 53 |
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| Fig. 54 | |||||
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| Closed |
Fig. 55 | position |
Fig. 50 |
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| Fig. 51 |
| Fig. 52 |
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Code | Description of alarm |
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| Status |
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AL10 | Ignition attempts finished (no flame/condensate present) | Block |
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AL20 | Limit thermostat fault, blocked flue switch, flue thermostat | Block |
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AL21 | Low temperature thermostat/condensate pump safety | Block |
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AL29 | device fault |
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Flue sensor over temperature lock out |
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AL60 | Water tank probe fault |
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AL71 | Delivery probe fault (open/short circuit) | Stop |
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AL73 | Return probe fault (open/short circuit) | Stop |
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AL28 | Return/delivery probe differential fault | Block |
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AL26 | Return over temperature |
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AL79 | Delivery over temperature / | Block |
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AL41 | differential fault |
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System water pressure low |
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AL40 | System water pressure low (after 10 minutes) | Block |
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AL34 | Fan tacho fault |
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AL52 | Generic electronic fault |
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AL55 | No boiler mode configuration fault (corresponding jumper | Block |
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AL91 | absent) |
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| Advice |
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The main heat exchanger need to be cleaned – |
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| call the Raypak technical service |
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For AL41 faults
If the pressure on the water gauge located on the control panel is less than 7 psi (0.5 bar), proceed as follows:
-Turn the function selector to 
(Fig. 54)
-Fill the system until the pressure indicated on the water gauge lies between
-Move the function selector to the desired position.
In case of frequent pressure drops, call your local Service Technician.
For alarm AL91
The boiler has an internal self diagnostic system that can advise if it is necessary to clean the main heat exchanger (alarm code AL91) after 2500 hours of working in particular conditions. After the heat exchanger cleaning (using the cleaning kit – Raypak Part No. 013142F) it is necessary to reset the hour meter with the following instructions:
Switch off the electric supply to the boiler Remove the knob of the main selector
Switch on the boiler while pressing the CO button for at least 4 seconds (Fig. 59). To check if the counter has been reset, switch OFF and ON the boiler main supply, after the lighting of all the segments of the display, the value of the counter will appear.
NOTICE
The reset counter procedure must be carry on after every heat exchanger deep cleaning and in any case after heat exchanger replacement.
NOTICE
To check the hours of the counter, switch off the main supply, than switch on. After the lighting of all the elements of the display, a number will appear: multiply for 100 to get the hours (18 = 1800 hours, 01 = 100 hours)
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Fig. 56 | Fig. 57 | ||||||||||||||
45
