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| EN
EIOM v2018.04
• All steps of the electric heater operates;
• Thermal protections are not activated;
• Circuit breaker is not switched off (because of current overload);
• Cables and wires do not touch heating elements;
• The cables and wires do not melt;
Establishment of malfunctions:
MALFUNCTION
REASON OF MALFUNCTION
ELIMINATING MALFUNCTION
Full heating no regulation
Malfunction is in electrical circuit up to heater
(controller, thermostat).
Check control devices and eliminate malfunc-
tion.
No heating
If there is no voltage on the contacts of heat-
er then malfunction in electrical circuit up to
heater (controller, fuses, thermostats, switch-
es, etc.).
Check control devices and eliminate malfunc-
tion.
If there is voltage on the contacts of heat-
er then malfunction in overheat protections,
heating elements.
Check contacts of overheat protections, mea-
sure voltage on heating elements and elimi-
nate malfunction.
6.4 GAS-FIRED HEATER
The gas-fired heater designed to heat air with natural or propane gas and mounted in the unit.
Gas-fired heater has its own control system.
Power supply and control signal needed for control.
Gas-fired heater controls type is on/off or 10V modulating.
NOTE: For more information, control, maintenance, diagnostics and troubleshooting refer to gas-fired heater technical specification.
