10
EKS (NI, NIS, NV, NV PH, NV PTC/PS)
www.salda.lt
No heat from heater
1. Manual reset thermostat is cut off. In this case need to figure the
cause of the overheating of the heater. Eliminate overheating cause,
press „RESET“ button on heaters cover.
2. No power supply to heater – check all external electrical connection
components (relays, switches, controllers)
Automatic circuit breaker switching off
1. Check circuit breakers data, it must correspond to heaters electrical
data.
2. Check isolation of connection cables, wires, check is heater grounded.
3. Check power supply source data, it must correspond to heaters elec-
trical data.
Protection thermostat cut off
1. Low air flow speed through heater. Check filters, fans, ducts of system.
Standard heaters EKS
No heating from heater
1. Manual reset thermostat is cut off. In this case need to figure the
cause of the overheating of the heater. Eliminate overheating cause,
press „RESET“ button on heaters cover.
2. No power supply to heater – check all external electrical connection
components (relays, switches, controllers).
3. Temperature sensor fault. Check sensor resistance, it must be 10 kΩ
at 25 °C.
4. External setpoint device fault. Check device potentiometer resistance,
it must be 5 kΩ.
5. PCB fault. Change PCB.
Heater gives full output, not by setpoint
1. Temperature sensor fault. Check sensor resistance, it must be 10 kΩ
at 25 °C.
2. External setpoint device fault. Check device resistance, it must be 5
kΩ.
3. Triacs fault. Check triacs conductance.
4. PCB fault. Change PCB.
Automatic circuit breaker switching off
1. Check circuit breakers data, it must correspond to heaters electrical
data.
2. Check isolation of connection cables, wires, check is heater grounded.
3. Check power supply source data, it must correspond to heaters elec-
trical data.
Protection thermostat cut off
1. Low air flow speed through heater. Check filters, fans, ducts of system.
Heaters with built-in controls EKS NV, EKS NI, EKS NIS
No heating from heater
1. Manual reset thermostat is cut off. In this case need to figure the
cause of the overheating of the heater. Eliminate overheating cause,
press „RESET“ button on heaters cover.
2. No power supply to heater – check all external electrical connection
components (relays, switches).
3. Temperature sensor fault. Check sensor resistance, it must be 10 kΩ
at 25 °C.
4. Pressure switch fault. Check if pressure in system is set correctly
(check the pressure when air flow is not less then 1,5 m/s).
5. PCB fault. Change PCB.
Heater gives full output, not by setpoint
1. Temperature sensor fault. Check sensor resistance, it must be 10 kΩ
at 25 °C.
2. Air flow sensor sensor fault. Check sensor resistance. It must be 22 Ω
between X15..X16 and 10 Ω between X15..X18. Sensor must be clear.
3. Triacs fault. Check triacs conductance.
4. PCB fault. Change PCB.
Automatic circuit breaker switching off
1. Check circuit breakers data, it must correspond to heaters electrical
data.
2. Check isolation of connection cables, wires, check is heater grounded.
3. Check power supply source data, it must correspond to heaters elec-
trical data.
Protection thermostat cut off
1. Low air flow speed through heater. Check filters, fans, ducts of system.
2. Pressure switch fault. Check if pressure in system is set correctly
(check the pressure when air flow is not less then 1,5 m/s).
Heaters with built-in controls EKS NV PTC/PS, EKS NV PH
