SECTION 12: T
ROUBLESHOOTING
61 of 71
12.1 Control LED
The control inside the heater's control compartment
is eq
u
ipped
w
ith a tri-color LED. The LED offers
comprehensi
v
e diagnostic capability. The LED is
sho
w
ing some form of stat
u
s signal at all times
w
hen
the control is po
w
ered. The color of the LED
differentiates normal from error conditions as follo
w
s:
GREEN indicates normal operation.
RED indicates an error condition.
YELLOW (fast flashing) indicates a RETRY attempt.
LED NOT LIT indicates no po
w
er to control.
12.2 General LED Codes
No LED:
No Po
w
er to control.
Slo
w
Green:
LED slo
w
ly flashes on and off,
indicates po
w
er to the control
board b
u
t no call for heat.
GREEN, 1 flash:
Call for heat indicates the
heater is performing the safe
start pre-p
u
rge f
u
nction or
H.S.I.
w
arm-
u
p.
GREEN, 2 flashes:
Call for heat indicates the
heater is performing light off,
heater
w
arm-
u
p, or heater r
u
n.
GREEN, 3 flashes:
*Only applicable for
thermostat control*
Gas ON - No call for heat,
u
nit
mod
u
lating from single stage
thermostat.
AMBER, 1 flash:
Call for heat
w
hen flame signal
is belo
w
1µA
AMBER, 2 flashes:
Gas ON - Call for heat
w
hen
flame signal is belo
w
1µA
AMBER, 3 flashes:
*Only applicable for
thermostat control*
Gas ON - No call for heat,
u
nit
mod
u
lating from single stage
thermostat
w
hen flame signal
is belo
w
1µA.
AMBER,
Fast Flashing:
Heater is in RETRY mode.
RED Steady LED:
Control FAILURE,
No 24 V po
w
er s
u
pply.
RED, 1 flash:
Locko
u
t- Ins
u
fficient sensed
air press
u
re
w
hen blo
w
er is
on.
Condition co
u
ld be ca
u
sed by:
• Air Side Door
• Blo
w
er
• Obstr
u
ction in
inlet or o
u
tlet
• Press
u
re hose fittings
• Press
u
re S
w
itch
RED, 2 flashes:
Locko
u
t- Blo
w
er air press
u
re
reads abo
v
e zero le
v
el
w
hen
blo
w
er is off.
Condition is ca
u
sed by
a press
u
re sensor fail
u
re or
complete blockage of air
intake or exha
u
st
v
ent.
RED, 3 flashes:
Locko
u
t- Flame is sensed on
w
hen it sho
u
ld be off or off
w
hen it sho
u
ld be on.
Co
u
ld be ca
u
sed by:
• Flame Rod
• H.S.I.
• Gas S
u
pply
• 120 V S
u
pply Polarity
• Board Fa
u
lt
RED, 4 flashes:
Locko
u
t- Gas Val
v
e.
Condition ca
u
sed by main
v
al
v
e on gas
v
al
v
e.
Check gas
v
al
v
e
w
iring.
RED, 5 flashes:
Locko
u
t- Board Fail
u
re.
Board m
u
st be replaced.
RED, 6 flashes:
Not
u
sed.
RED, 7 flashes:
Locko
u
t- F
u
se Open.
Condition co
u
ld be ca
u
sed by:
• F
u
se blo
w
n
• High Limit S
w
itch open a
board location J3
Содержание Energytube EM-115
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Страница 69: ...SECTION12 TROUBLESHOOTING 63 of 71 12 3 Troubleshooting Flow Chart ...
Страница 70: ...EM SERIES INSTALLATION OPERATION AND SERVICE MANUAL 64 of 71 ...
Страница 72: ...EM SERIES INSTALLATION OPERATION AND SERVICE MANUAL 66 of 71 12 5 Pneumatic Connections ...
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