Procom Lost River PCILVFD18RT Owner's Operation And Installation Manual page 26

Problem
Using natural gas and
pilot will not light.
Pressure Switch
When using natural gas (NG), there is a pres-
sure switch that acts to turn off the gas flow to
the pilot if the inlet pressure exceeds 9.5" WC.
This is to prevent the operation of the unit on the
wrong gas (propane/LP). If your natural gas sup-
ply exceeds 9.5" WC the unit will not operate.
Either contact your gas supplier to check and
adjust the inlet pressure or a qualified service
technician can bypass the pressure switch.
Before attempting to bypass the pressure
switch, make sure the type of gas being used
is correct. Check to make sure the connection
fitting is in the correct inlet on the regulator.
Refer to Connecting to Gas Supply, page 15.
Only a qualified installer should bypass the
pressure switch. To bypass the pressure
switch locate the set screw on the regulator.
Use a small flat bladed screw driver to turn the
set screw counterclockwise 2 turns. This will
bypass the pressure switch function.
Problem
When ignitor button is
pressed in, there is no
spark at ODS/pilot.
When ignitor button is
pressed in there is a
spark at ODS/pilot but
no ignition.
26
TROUBLESHOOTING
Possible Cause
I n l e t p r e s s u r e e x c e e d s
9.5" WC.
Possible Cause
1. Ignitor electrode is posi-
tioned wrong. Ignitor elec-
trode is broken.
2. Ignitor electrode is not con-
nected to ignitor cable.
3. Ignitor cable is pinched or
wet.
4 Broken ignitor cable.
5. Bad piezo ignitor.
6. Low battery.
1. Gas supply is turned off or
equipment shutoff valve is
closed.
2. C o n t r o l k n o b n o t f u l l y
pressed in while pressing
ignitor button.
3. Air in gas lines (new instal-
lation or recent gas interrup-
tion).
4. ODS / pilot is clogged.
5. Control knob not in PILOT
position.
6. Depleted gas supply (pro-
pane).
www.usaprocom.com
Corrective Action
Bypass pressure switch. See
instructions below.
The entire gas delivery piping including con-
nections inside the heater should be leak
tested by the qualified installer. After leak
testing the qualified installer should light the
appliance. Refer to the correct flame pattern
as illustrated on page 23. All flame patterns
should be safely inside the product. If for any
reason they are not, stop use of the appliance
and call for repairs.
Pressure
Switch
Set Screw
Figure 33 - Gas Regulator Pressure Switch
Corrective Action
1. Replace electrode.
2. Replace ignitor cable.
3. Free ignitor cable if pinched
by any metal or tubing. Keep
ignitor cable dry.
4. Replace ignitor cable.
5. Replace piezo ignitor.
6. Replace battery.
1. Turn on gas supply or open
equipment shutoff valve.
2. Fully press in control knob
while pressing ignitor button.
3. Continue holding down con-
trol knob. Repeat igniting op-
eration until air is removed.
4. Clean ODS/pilot (see Care
and Maintenance, page 24) or
replace ODS/pilot assembly.
5. Turn control knob to PILOT
position.
6. Contact local propane/LP
gas company.
200371-01B