Troubleshooting - Solaronics SSTG Installation, Operation & Maintenance Instructions Manual

•
Check for symptoms and possible causes in the order presented from the top of this chart to the bottom.
•
The symptoms and possible causes are in a logical progressive order as in a flow chart.
SYMPTOM
New installation. 1.
2.
3.
4.
Gas odor. 1.
Blower / PL-1 light does 1.
not come on when
2.
system energized.
3.
Pressure switch does 1.
not close / PL-2 light
does not come on.
2.
3.
4.
5.
6.
Ignitor does not spark / 1.
PL-3 light does not
come on.
2.
3.
Burner does not ignite. 1.
(There are three trials-
2.
for-ignition before the
IDC goes into lockout).
3.
4.
5.
6.
7.
8.
9.
10. Combination gas valve outlet (manifold)
11. Main or sub gas orifice blocked by spider web,
12. Gas orifice(s) or air orifice size not correct.
Spark does not stop 1.
when the burner ignites.
2.
3.
4.
Burner does not stay lit 1.
until the thermostat is
2.
satisfied.
3.
4.
5.
6.
7.
Heater will not turn off. 1.

TROUBLESHOOTING

POSSIBLE CAUSE
Heaters not isolated during high pressure leak
testing.
All gas lines not completely bled of air.
Gas supply regulator reversed.
Electrical supply line voltage & neutral polarity
reversed.
Gas pipe joints loose.
Power supply fuse defective.
115 VAC not reaching heater.
Blower defective.
Inlet or exhaust piping not the proper size and
length. (Refer to manual.)
Inlet or exhaust termination fittings not to factory
specifications.
Inlet or exhaust blocked.
Airflow tubing or snubber orifice blocked in one
or both tubes.
Blower wheel dirty or damaged.
Airflow pressure switch defective.
115 VAC not reaching the Ignition Detection
Control (IDC) due to loose wire or connector.
High-voltage wire loose or damaged.
Ignition Detection Control (IDC) defective.
Gas supply not turned on.
Ignitor not sparking at the tips.
Ignitor not sparking at correct gap.
Gas inlet pressure not correct. (See serial
plate). Gas inlet piping not sized correctly.
Gas inlet pressure not correct. (See serial
plate). Gas supply regulator not set correctly.
Gas supply regulator sticking.
Combination gas valve not in the ON position.
Ignition Detection Control (IDC) not sending
115VAC to combination gas valve.
Combination gas valve defective.
pressure not correct. (See serial plate).
etc.
Power supply not grounded to a true earth
ground.
Flame sensor wire loose or damaged.
Flame signal not at least -17 VDC.
Ignition Detection Control (IDC) is defective.
Flame sensor wire is loose or damaged.
Ground connection to IDC loose.
Electrical supply line voltage & neutral polarity
reversed.
Inlet or exhaust partially blocked.
Airflow pressure switch erratic or defective.
Flame signal not at least -17 VDC.
Ignition Detection Control (IDC) defective.
Thermostat defective.
CORRECTIVE ACTION
1. Replace combination gas valves on each
heater.
2. Disconnect flex hose at each heater until gas is
present. Connect flex hose and leak test.
3. Remove and install properly.
4. Correct electrical supply polarity.
1. Check joints with soap solution, tighten as
needed.
1. Replace fuse.
2. Check thermostat and wiring and fix.
3. Replace blower.
1. Replace piping as required.
2. Replace fittings as required.
3. Clear blockage.
4. Clear blockage.
5. Clean or repair wheel.
6. Replace airflow pressure switch.
1. Repair loose wire or connector.
2. Secure high-voltage wire or replace ignitor.
3. Replace IDC box.
1. Open all manual gas supply valves.
2. Measure spark gap and adjust gap as
necessary to 5/32" [0.156" (3.96mm)].
3. Replace ignitor.
4. Replace inlet gas piping with correct size pipe.
5. Adjust gas supply regulator to set inlet pressure
to proper level. (See serial plate).
6. Replace gas supply regulator.
7. Turn combination gas valve to the ON position.
8. Replace IDC box.
9. Replace combination gas valve.
10. Adjust combination gas valve regulator to set
inlet (manifold) pressure to proper level.
11. Clear blockage.
12. Install correct size gas orifice(s) or air orifice.
1. Install a true earth ground to the power supply.
2. Secure flame sensor wire or replace wire
harness to IDC box.
3. Check gas inlet and manifold pressures
compared to the possible causes in the previous
symptom where the burner does not ignite.
4. Replace IDC box.
1. Replace wire harness to IDC box.
2. Tighten ground connection to IDC.
3. Correct electrical supply polarity.
4. Clear blockage.
5. Consult factory or replace airflow pressure
switch.
6. Check gas inlet and manifold pressures
compared to the possible causes in the previous
symptom where the burner does not ignite.
7. Replace IDC box.
1. Replace thermostat.
17