9.3 Internal Relay Tests
Figure 9.3.i Relay Test 1
During the Internal Relay Tests phase shown in Figure 9.3.i., the MM will check its internal flame safe relays 1 to 5.
Should any Lockouts occur now for the relay tests such as ‘FSR Test 1A’ this is an indication of an internal fault
within the MM.
The MM will go through a series of 5 relay tests.
If voltage is detected on terminal 57 call for heat during these checks when there should not be, the lockout ‘Fail Safe
Relay Fault’ will occur. Please check the 5A fuse.
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