Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH Demand
Attach both +ve and -ve connections on FGA to their respective connections at the test points on the top of the boiler
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
With the fan running is there a differential of at least 0.5mb?
Note:
0.5mb is absolute minimum for APS to operate, if fault is intermittent and the pressure is only slightly above 0.5mb you may wish to select "differential unsatisfactory" to investigate possible issues.
Note:
0.5mb is absolute minimum for APS to operate, if fault is intermittent and the pressure is only slightly above 0.5mb you may wish to select "differential unsatisfactory" to investigate possible issues.
