Heatrae Sadia ElectroMax Installation & Servicing Instructions Manual page 30

diagnose problems with the Electromax
unit. These checks should be carried out
by a competent installer or an authorized
Heatrae Sadia service engineer or agent. A
range of replacement parts (see Section 9.2)
is available should any major component
be suspected as faulty. The instructions in
Section 9.2 detail how to remove and replace
key components and assemblies. Observe
all safety warnings before removing any
components, if in doubt contact Heatrae
Sadia for further advice.
Diagram 22 Electric Boiler Fault Finding
Master
ELECTR I C BO I LER
N O T W O R KI N G
N O TE:
D O N O T C H EC K ELEM EN T
R ESI STA N C E W I TH PO W ER
O N
30 Installation & Servicing Instructions
I S C H
G O TO SUPPLY
N O
SW I TC H O N
FAU LT FI ND I N G
& I LLU M I N ATED
SEC TI O N
YES
I S TH E
G O TO ALAR M
ALARM STATU S
YES
FAU LT FI ND I N G
I N D I C ATO R
SEC TI O N
I LLU M I N ATED
N O
I S TH E
G O TO D EM AN D
N O
D EM AN D STATU S
I N D I C ATO R FAU LT
I N D I C ATO R
FI N DI N G SECTI O N
FLASH I N G
YES
D O ES
TH E D EM AN D
G O TO D EM AN D
N O
I N D I C ATO R STO P
I N D I C ATO R FAU LT
FLASH I N G AFTER
FI N DI N G SECTI O N
3 M I NS
YES
N O
C H EC K FO R PR I M ARY
W ATER FLO W
YES
C H AN G E M AI N
N O
PC B
YES
C H EC K EAC H BO I LER
ELEM EN T I S APPR O X.
19 O H M S
Diagram 23 Electric Boiler Fault Finding
Supply Faults
BO I LER ELECTR I C AL
SU PPLY AT 24
SU PPLY FAU LT
H O UR & 45 AM P
FI N DI N G
TERM I N ALS
D O ES TH E
C H O N SW I TC H
I LLUM I N ATE W HEN
I S TH ERE
8V DC O N
C 1 O N C O N TR O L
Diagram 24 Electric Boiler Fault Finding
Alarm 1
ALARM TR I PS O N
I S TH E
PO W ER U P.BO TH
BO I LER H O T
D EM AN D AN D ALAR M
I N D I CATO RS AR E RED
I S TH E
PU M P
R U NN I N G
TH E 3 AM P
PAN EL M O U N TED
FU SE BLO W N
C O NN 3
O PEN C I R C UI T
I S 240V
N O
C H EC K ELECTR I C AL
SU PPLI ES
YES
N O
C H EC K SW I TC H
O N
YES
N O C H EC K FO R SH O RT
C I R CU I TS.I F O K
R EPLAC E FUSE FS 1
YES
N O
R EPLAC E TH E
C O NTR O L PC B
PC B
YES
R EPLAC E TH E
STATU S DI SPLAY PC B
N O
YES
YES
R U N SYSTEM I N
ALARM M O D E TO
ALLO W PU M P TO
C O O L SYSTEM
BEFO R E R ESETTI N G
N O
H AS
YES
R EPLAC E FU SE
N O
C H EC K SERVI C E
N O
VALVES ARE O PEN .
C H EC K AN D REPLAC E
PU M P
YES
R EPLAC E TH E
C O NTR O L PC B
TH ERE I S N O W ATER
I S
I N TH E SYSTEM .
N O
SW I TC H O FF
I M M ED I ATELY.
C H EC K AN D REFI LL
BEFO R E R ESTAR TI N G
YES
C H EC K AN D REPLAC E
TH E O VER -
TEM PER ATU R E
SW I TC H C O NN 3