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 check that there is a differential of at least:
Microsystem RFFI 21 - 1.0mb.
Microsystem RFFI 28 - 0.5mb.
Note:
Pressures given are the absolute minimum for APS to operate, if fault is intermittent and the pressure is only slightly above you may wish to select "differential unsatisfactory" to investigate possible issues.
Note:
Pressures given are the absolute minimum for APS to operate, if fault is intermittent and the pressure is only slightly above you may wish to select "differential unsatisfactory" to investigate possible issues.
