Seeley GDH Series, Инструкция по установке, запуску, эксплуатации, техническому обслуживанию и ремонту

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Maintenance
GDH Series Direct Fired Ducted Heater Page 12 of 16
Maintenance
F
AULT
F
INDING
C
HART
Problem Possible Cause Remedy
1. No heat a. Switched off. Check selector switch is on.
Check time switch settings
b. Blown fuse. Check and repair fuse.
c. Loose electrical connection Tighten connections.
d. Faulty burner control. Ensure power to correct terminals.
Refer to wiring diagrams. Replace
control if necessary.
2. No heat – Burner control cycles
part way and stops a. Insufficient air volume at air
pressure switch Check air supply source. Use
manometer to check air pressure.
b. Air pressure leaking away from
switch Check pipe connections, ensure
pressure test point screws are in.
c. Fault air pressure switch Replace air pressure switch.
3. Burner control will not reset a. Pilot or main valves leaking, flame
present out of sequence. Dismantle valves and clean.
Replace defective valve.
4. Burner cuts in and Air pressure switch cycling. Check pressure switch setting. Check
air supply source, air filters, fan belts
etc.
5. Burner control cycles part way and
locks out. a. No gas to heater. Check gas supply.
b. No ignition. Clean ignition electrode and set.
Ensure HT cap on ignition electrode.
Check ignition spark. Check power to
transformer. Replace ignition
transformer.
c. No gas to pilot Clean orifice in pilot burner.
d. Faulty pilot solenoid valve. Check power to pilot solenoid valve.
Replace pilot solenoid valve.
e. Burner control faulty Replace burner control
6. Pilot starts, burner control locks
out. a. Dirty UV cell Clean UV cell.
b. Low UV to cell Fit 0 – 1000 uA meter to cell. If
reading below 100 uA re-aim UV cell.
c. Low gas pressure Check gas supply.
d. Loose wires UV cell circuit Tighten electrical connections.
e. Faulty UV cell. Replace UV cell
f. Ionisation rod not set. Check position.
7. Main burner runs, burner control
locks out a. High limit tripping out Check high limit setting.
Insufficient air; check air supply
source.
Main burner pressure too high; set to
data plate spec.
b. High limit faulty. Replace high limit.
8. Pilot burner runs, no main burner. a. Loose electrical connections. Tighten connections.
b. Main gas valve actuator/s faulty Replace gas valve actuator/s.
9. Temperatures too high in heated
area. a. Thermostat set too high. Set thermostat to desired
temperature.
b. Thermostat sticking. Clean thermostat contacts.
c. Thermostat faulty Replace thermostat.