SERVICE WARNING LIGHT (All Models except WB5E)
All models except WB5E have this facility. This light is designed to help you discover the cause of any malfunction. If the circuit senses a problem, the service light will flash a number of times and then pause and repeat this sequence. Count the number of flashes between pauses and refer to the table on the back cover. Some serious service problems will disable the boiler whist less serious ones will allow you to continue to operate until a convenient time arises for the fault to be rectified.
NUMBER OF |
| MEANING | ACTION |
FLASHES |
|
|
|
BETWEEN |
|
|
|
PAUSES |
|
|
|
1 Constant | Water level sensor has scaled up | Clean Sensing Probes | |
| at normal level and machine has |
| |
| filled to a higher level |
| |
2 | Operating level sensor has been | Clean Sensing Probes | |
| detected but lower level sensor |
| |
| has not |
| |
3 | Overfill level sensor has been | Clean Sensing Probes | |
| detected but other sensors have |
| |
| not |
| |
4 | Danger level sensor has been | Clean Sensing Probes | |
| detected and machine functions |
| |
| have been shut down |
| |
5 | Thermistor or potentiometer have | Call service department on | |
| failed | 01704 502911 | |
|
|
| Quoting the Serial Number |
6 | Boiler has failed to fill in the | Check water supply | |
| allotted time. Possible causes :- |
| |
| 1. | Water supply turned off. | If in order call Instanta |
| 2. | Water inlet valve has failed. | service department quoting |
| 3. | Blockage in water inlet pipe. | the Serial Number |
| 4. Pipe connecting inlet valve to |
| |
|
| boiler has become detached. |
|
| 5. Bottom sensor is scaled up |
| |
7 | The temperature sensor | Call service department on | |
| (thermistor) has become | 01704 502911 | |
| disconnected or the heating | Quoting the Serial Number | |
| element(s) have failed. |
| |
8 or 9 | Fault on temperature sensor | Call service department on | |
| (thermistor). | 01704 502911 | |
|
|
| Quoting the Serial Number |
10 | Heating element(s) faulty . | Call service department on | |
|
|
| 01704 502911 |
|
|
| Quoting the Serial Number |
11 | The water supply has been | Check water supply | |
| interrupted and the level has |
| |
|
|
|
|
12
