Heatrae Sadia ElectroMax Installation & Servicing Instructions Manual page 33

Diagram 32 Water Heater Fault Finding
Boost (upper) Immersion Heater Faults
BO O ST ( U PPER )
SU PPLY AT
I M M .H EATER NO T
O PERATI N G
TER M I N ALS
BO O ST ( U PPER )
TH ER M O STAT
TER M I N ALS
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
TH ER M O STAT
SET TO A LO W
TEM PER ATU R E
TH E TH ER M AL
I S 240V
C H EC K 24 H O U R
N O
ELECTR I C AL SU PPLY
24 H O U R
I S O N
YES
I S 240V
SU PPLY AT
N O
PR ESS BO O ST
SW I TC H
YES
R EPLAC E
N O
I M M ER SI O N
H EATER
YES
I S
YES
SET TH ER M O STAT
TO PO SI TI O N 4 TO 5
N O
H AS
YES
R E- SET TH ER M AL
C U T- O U T
C U T- O U T
O PERATED
N O
N O
R EPLAC E
TH ERM O STAT
YES
ALLO W TI M E FO R
W ATER TO R E- H EAT
C H EC K I N TERN AL
W I RI N G
N O
I S 240V
SU PPLY AT
BO O ST ( U PPER )
TH ER M O STAT
TER M I N ALS
YES
Diagram 33 Water Heater Fault Finding
Water Flow Faults
W ATER FLO W
W ATER FLO W
W H EN O U TLETS
PR O BLEM S
AR E O PEN ED
W ATER FLO W I N G
W ATER H O T
Installation & Servicing Instructions
D O ES
C H EC K M AI NS W ATER
N O
SU PPLY I S O N .
C H EC K C O LD W ATER
C O M BIVALVE I S
C O RR EC TLY FI TTED .
C H EC K STR AI N ER I S
N O T BLO C KED
YES
I S C H EC K O PERATI O N
N O
O F I M M ER SI O N
H O T H EATERS
YES
YES C H EC K AFTER A FU LL
O FF PEAK H EATI N G
PER I O D
N O
I S
N O
C H EC K TH ER M O STAT
SETTI N G S
EN O U G H
33