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c) Flame Failure Reignition
If the established flame signal is lost while the burner is operating, the HSI module
(controller) will respond within 0.8 seconds. The gas valve will be de-energized, the
HSI module resets and starts a new ignition sequence in an attempt to relight the
burner. If the burner does not light, the HSI module will de-energize the gas valve.
The HSI module will make two (2) more attempts to relight the burner. If the burner
does not relight the HSI module will go into the LOCKOUT MODE. If the flame is
reestablished, normal operation resumes.
d) Fault Conditions
The red L.E.D. (light emitting diode) will flash on for a 1/4 second, then off for a
1/4 second during a fault condition. The pause between the fault codes is three (3)
seconds.
NOTE: To reset the HSI MODULE if it is in the LOCKOUT MODE or the FLAME
SENSOR FAULT MODE, open and close the main door then restart the dryer.
3) HSI (Hot Surface Ignition) Module
The HSI module (controller) utilizes a microprocessor to continually and safely
monitor , analyze, and control the proper operation of the gas burner. Additional
features consist of L.E.D. diagnostics, automatic one (1) hour reset, multiple tries, and
flame current testing pins highlight the HSI module benefits.
The terminal designation that are listed below correspond to the designations on the
bottom portion of the HSI module (as shown from left to right).
TERMINAL DESIGNATIONS
FC1/FC2 ......... F
LAME
S
ENSOR
C
URRENT
C
HECK
P
OINTS
S1 .................... I
GNITOR
L1 .................... 24 V
OLT
I
NPUT
(HOT)
L2 .................... NOT USED (N
EUTRAL
- 120
V
I
NPUT
O
NLY
)
S2 .................... I
GNITOR
R
EMOTE
S
ENSOR
/F
LAME
S
ENSOR
W ..................... T
HERMOSTAT
I
NPUT
MV1 ................ M
AIN
V
ALVE
P
OWER
GND ............... System Ground
FAULT CONDITION INDICATIONS
E
RROR
M
ODE
L.E.D. I
NDICATION
I
NTERNAL
HSI M
ODULE
F
AILURE
S
TEADY
O
N
F
LAME
S
ENSOR
F
AULT
2 F
LASHES
I
GNITION
LOCKOUT 3 F
LASHES