24
Mynute
FAULT FINDING TEST ‘C’(Mynute 28e): turn the selector to the “on” position
ST
AR
T
Does
pump r
u
n
Is there
230V betw
een
ter
minals
M15.1 &
M15.2
NO
NO
Replace main
PCB
YES
NO
Replace pump
Chec
k wir
ing &
connections
Does
fan r
u
n
YES
Is there
230V at L & N
of pump
Is there
a spar
k at the
electrode
NO
YES
Go to test "D"
YES
Replace air
pressure s
w
itch
NO
Is there
24Vdc at C &
NO of air
pressure
s
w
itch
Is there
24Vdc betw
een
ter
minals M3.4 &
M3.5
NO
Go to test "E"
YES
Chec
k
contin
u
ity &
connections
YES
NO
Is there
230V betw
een
ter
minals
M12.1 &
M12.2
YES
Is there
230V betw
een
L & N
ter
minals of
fa
n
Chec
k
wir
ing &
contin
u
ity
YES
Replace f
a
n
Is there
24Vdc betw
een
M5.3 & M3.3
NO
NO
Replace main
PCB
NO
YES
Is there
24Vdc betw
een
ter
minals M3.4
& M5.3
NO
YES
Replace high
limit ther
mostat
NO
Is there
24Vdc betw
een
ter
minals M5.3
& M5.4
YES
Is there
24Vdc betw
een
M5.3 & NO of
air pressure
s
w
itch
YES
Replace main
PCB
NO
Is there
24Vdc betw
een
ter
minals M5.3
& M3.5
NO
NO
YES
YES
Is there
24Vdc betw
een
M5.3 & C of air
pressure
s
w
itch
Chec
king wir
ing
& connections
Chec
king wir
ing
& connections
Replace air
pressure s
w
itch
YES
Chec
k wir
ing &
connections
,
chec
k w
ater
pressure s
w
itch