Troubleshooting - Econo Heat OMNI OWH-500 Installation, Operation And Service Instructions

Troubleshooting

Symptom
1. Heater shuts
2. Loss prime overnight
W t hold vacuum
IS TANK EMPTY?
3. Fails to start.
4. educed air pressure,
cannot increase.
5. Hard starting diminished
lame.
6. Heater es requentl
without thermostat
temperature setting being
achieved in area to be
heated.
7. Heater rumbles and
excessive heat blow back
rom lame vision port.
8. Heater establishes lame
but locks out or shuts .
Need to reset primar
9. Proper dr t setting
cannot be achieved
10. Poor or reduced heat
production.
OMNI by EconoHeat
♦Most Likely
Cause
♦ Manual reset
♦ acuum air leak i
uel line
♣ Plugged pump screen
• Plugged r or tank oil empt
♦ acuum Leak
♦ Inadequate Fuel Suppl
• No Pressure
• No Pre-heat
• Auto start circuit not unctioning
• No Arc
• No Air Pressure
♦ Gauge m
be bad.
♦ Intake ilter mu ler is plugged
with dust or dirt.
♣ Compressor vanes m
be worn.
• Exposed to water.
♦ Partia
plugged r.
♣ Out
uel
♣ No oil to burner
• estriction in nozzle usuall onl
when initiall installed. New lines
m have oreign material in them.
• Air band open t ar
♦ Heater over iring.
♣ Temperature setting wrong
On high limit an et switch.
• High limit et switch bad
♦Pump setting wrong
♣ Dra t incorrect. I proper dra t
t be achieved, heater could
have excessive amount ash and
w t allow icient dra t.
♦ Phot
e cant lame.
♣ Due to back dr t. Flame end
cone m have ash.
• Flame too small
♦ Negative dr t in building
or exhaust ans present.
♣ Excessive ash buil
Heater
♦ Flame too small
♣ Entir
uel suppl m be plugged.
•
Excessive ash buildup exchangers
•
Through vision port, check lame
to see i lame is smaller than usual.
♣Least Likely
•Less Likely
Remedy
♦ equiring manual restart
♦ Check all uel connections. Tight
♣ Check pump screen, m
• Clean ilter. Using vent port, reprime pump (See Figure 6 & 7).
♦ Open bleeder port i air present. Check and tighten ittings.
♦ Clean ilter. Check all uel connections. Tighten ittings.
• Check, m need cleaning to access, remove pump cover.
• Using vent port, reprime pump (See Figure 6 & 7)
• Be sure all wiring to pre-heater is tight-no loose connections.
• Bad rod- eplace. Continuit at terminals.
• Check circuit control board and replace i necessar (Call Factor
• Check continuit at terminals
eplace i needed.
• Check springs to electrode rod adjustment (under tr
make sure t make good contact. Open burner door and make
sure electrode tips ar
• Check pressure regulator and adjust. Check air suppl line or
restrictions or leaks. Pull compressor cover and inspect carbon
vanes. M need to replace. Check ilter, clean i needed.
♦ eplace gauge.
♦ emove & Clean with carburetor cleaner, dr thoroughl
♣ eplace carbon canes.
• emove cover, clean rust with emer cloth.
♦ Clean ilter. Using vent port-reprime pump (See Figure 6 & 7)
♣
ill Storage.
♣ Clean pump screen- emove pump cover. Using vent
port, reprime pump. (See igure 6 & 7)
• emove nozzle and check or oreign objects. (See Figure 9 and 11)
• Aluminum Block Pre-heater inside burner should not build
up carbon. I carbon is present, pre-heat circuit is mal unctioning.
Thermocouple heat sensor wire could have open circuit.
Heat control board m
Inspect both and replace either i needed. (See Figure 11).
• Close air band while viewing lame; open air band
slowl until combustion chamber is clear, not orange.
♦ Investigate and locate reason or over iring. I.e., nozzle
eroded, pump not unctioning properl , decrease pump motor speed.
(S or rem
♣ Check temperature setting and adjust as necessar
• eplace high limit an
♦ Pump not unctioning properl -over iring. M
eset lame slightl less than ½ w
Use adjustment knob on pump motor. (See Figure 7).
♣ Set dr t. Clean out combustion chamber and exchangers
ash. Check dr t-reset i needed.
♦ Clean photo
which is smoked up
♣ Swing open burner door and clean ash buil
end cone. (See Figure 5 & 8).
• Increase pump motor speed (See Figure 7).
♦ M
need to install power vent dr t inducer s in stack.
(See Figur or wiring).
♣ Clean ash and soot rom combustion chamber and heat
exchangers.
♦ Nozzle m
be plugged with debris-usuall
♣ Clean ilter both, oil strainer and oil pump screen.
• Clean ash rom combustion chamber and exchangers.
• M need to readjust pump PM. (Use knob on pump motor).
(See Figure 7).
reset button on.
ittings.
need cleaning-to access, remove pump cover
irerod limit snap switch.
t touchi lame cone. eadjust.
have blown circuit and circuit boar
)
et switch.
need PM readjust.
down tube combustion chamber.
back dr t smoke.
rom lame
ter ilter is cleaned.
ormer)
Do Not Use.
use.
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