Sierra Products, Inc. 5061 Brooks St. Ste. B, Montclair, CA 91763
P/N 140804 10/07
ELECTRICAL TROUBLE SHOOTING
W ARNING:
Only a trained technician should attem pt to
repair a pellet heater electrical system .
Note: All tests should be accomplished with the unit
therm ostat by-passed.
Rem ove both AC and DC power from unit. The igniter
system is protected with a 5 am p fuse located on the back
or side of the heater
(Figure 1)
. The igniter is switched “Off”
and “On” by the control system via a relay located in the
lower right pedestal in front of the control board
(EF3801/5001) or in lower left rear of the unit accessed
from the back (EF4001). W iring on all igniter system s are
the sam e. The following test steps will require a m ulti-m eter
with AC/DC volt and ohm functions:
a.
Unplug heater from wall outlet and 12VDC power!
b.
Rem ove 5 am p fuse holder cap and fuse by pressing
in and turning counter clockwise. Test fuse with ohm
m eter to confirm is not “open”. If fuse is open go to
Testing Igniter “d”. If fuse is good continue.
c.
Check 115VAC power wire connection to relay and
neutral wire connection to igniter term inal. This can
be accom plished with the ohm m eter. If wire is
disconnected or open replace.
d.
Disconnect igniter leads from relay and neutral. Test
continuity with ohm m eter between leads. If open
igniter is defective. If continuity exists then check for
internal grounding by checking each lead to the
shielded conduit of the igniter leads. If continuity
exists to ground then igniter is defective. If m eter
reads open on both leads to ground then igniter
should produce heat when properly connected to
115VAC.
e.
W ith igniter disconnected from relay, attach volt
m eter (set m eter to 200VAC) leads to relay 115VAC
out term inal and igniter neutral. Reapply 115VAC
power. Press operating button low. Relay should
im m ediately engage applying 115VAC to m eter. If
m eter has 115VAC then replace igniter as it should
be activated. If no AC power outputted from relay.
Continue to next test.
f.
Disconnect DC control wires from harness to relay.
Attach volt m eter (set m eter to 20VDC) leads to
harness term inals. Reapply 115VAC power. Press
operating button low. Control system should
im m ediately engage applying 12VDC to m eter. If
m eter has 12VDC then replace relay as it should be
activated. If relay does not engage, exchange control
board and/or m ain switch board.
REPLACEMENT PARTS:
ITEM
NO.
PART
NO.
DESCRIPTION
1
120120
12VDC RELAY
2
120117
CARTRIDGE HEATER
3
120118
AUTOLITE CONTROL SW ITCH
4a
202163
BURN POT SCREEN 5001
4b
202164
BURN POT SCREEN 3801/4001
5a
300501
BURN POT 5001-AUTOLITE
5b
300500
BURN POT 3801/4001-AUTOLITE
6
110510
5 AMP FUSE MDL5 (NOT SHOW N)
Custom er Service & Replacem ent Parts
Replacement parts are available from your local dealer or
on-line @ www.sierraproductsinc.net . or call or write:
Customer Service
Sierra Products, Inc.
5061 Brooks St. Ste. B,
Montclair, CA 91763
Phone 1-909-399-3355
Fax 1-909-399-3357
www.sierraproductsinc.net
