Viessmann C3HA, Installation And Service Instructions For Contractors

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113
Function Code Operating lev-
el
"State buffer" 8010 "F2"
"State engine burner" 8012 "F2"
"State suppl. burner" 8013 "F2"
"State generator" 8014 "F2"
"Lockout reason eng bu" (cause of lockout) 8015 "F2"
"Lockout reason supp bu" (cause of lockout) 8016 "F2"
"Engine burner WHY" (state) 8017 "F2"
"Supp burner WHY" (state) 8018 "F2"
"Boiler WHY" (state) 8019 "F2"
"Why EGC Stirling mains controller" (state) 8020 "F2"
"State supplementary source" 8022 "F2"
Relay test
The following relay outputs can be
switched subject to system equipment
level. The connected components thus
become operational. The mixers in the
heating circuits are opened and closed
via relay outputs QX21 and QX22. Function of the relay outputs (if the
Divicon heating circuit distributor
and extension kit are in the delivered
condition):
QX21 Mixer opens
QX22 Mixer closes
QX23 Heating circuit pump starts
Service scans
Status (operating states)
(cont.)
5618 294 GB
Service