Heatrae Sadia ElectroMax Installation & Servicing Instructions Manual page 31

Diagram 25 Electric Boiler Fault Finding
Alarm 2
ALARM TR I PS DU R I N G
SELF C H EC KI N G BU T
N O T I NSTAN TLY
Diagram 26 Electric Bolier Fault Finding
Alarm 3
ALARM TR I PS AFTER
A FEW M I N UTES O F
PU M P RU N N I NG
O PER ATI O N
TH E 3 AM P
PAN EL M O U N TED
FU SE BLO W N
PU M P NEO N
O N CO N TR O L PCB
I LLUM I N ATED
Alarm 4
TH E ALAR M
ALARM TR I PS
TR I P O N A D AI LY
O C CASI O N ALLY
Alarm Reset
To reset the unit after an ALARM condition:
a. Switch off the electrical supply
b. Correct the fault, check the system is full
of water, is set to the correct pressure and
primary circuit.
c. Switch the electrical supply back on.
TH ER E I S N O W ATER
I N TH E SYSTEM .
SW I TC H O FF
I M M ED I ATELY.
C H EC K AN D R EFI LL
BEFO R E R ESTAR TI N G
C H EC K FO R A FLO W
R ESTR I C TI O N .
YES
I S TH E
C H EC K TH E BYPASS,
I SO LATI N G AN D
R ADI ATO R VALVES
AR E O PEN .CH EC K
FO R AI R I N SYSTEM .
N O
H AS
YES
R EPLAC E FU SE
N O
I S TH E
YES
C H EC K AN D O PEN
PR I M ARY I SO LATI N G
VALVES.
C H EC K AN D R EPLACE
PU M P
N O
I F TH E PU M P N EO N
O N CO N TR O L PCB
D O ES N O T
I LLUM I N ATE W H EN
D EM AN D I S
I LLUM I N ATED REPLAC E
TH E C O N TRO L PCB
C H EC K FLO W AN D
D O ES
PR ESSU R E.C H EC K
YES
FO R TEM PO R AR Y
R ESTR I C TI O N S TO
BASI S
FLO W .C H ECK
C O NN EC TI O N S TO
O VER - TEM PER ATU R E
N O D EVI C E C O NN 3.
C H AN G E C O N TR O L
PC B
C H EC K FLO W AN D
PR ESSU R E.C H EC K
FO R TEM PO R AR Y
R ESTR I C TI O N S TO
FLO W .C H ECK
C O NN EC TI O N S TO
O VER - TEM PER ATU R E
D EVI C E C O NN 3.
R ESET.
Diagram 28 Electric Boiler Fault Finding
Demand Faults 1
240V AT TH E
D EM AN D I N DI C ATO R
R O O M TH ER M O STAT
FAULTS
C O N N EC TI O N S
240V BETW EEN
R AND N O N
Demand Faults 2
D EM AN D I N DI C ATO R
STI LL FLASH I N G
AFTER 3 M I NU TES
Note
There are two different types of status display
status display PCB must be used on the Un-
Radiator Model. (see Diagram 39)
Installation & Servicing Instructions
I S TH ERE
N O
C H EC K 3 AM P PAN EL
M O U N T FU SE
C H EC K PR O G.R O O M
I S C ALLI N G FO R H EAT
YES
I S TH ERE
N O
C H EC K W I RI N G
C O NTR O L
PC B
YES
N O
N EUTR AL M U ST BE
C O NN EC TED TO N
O N C O N TR O L
C O NN EC TO R
YES
R EPLAC E TH E
C O NTR O L PC B
D O ES
N O
C H AN G E TH E
TH E M AI N
C O NTR O L PC B
R C D TRI P
YES
C H EC K TH E
I N SULATI O N O F
TH E BO I LER
ELEM EN TS
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