Emerson 3000/ITR Manuel D’Utilisation

Excessive arcing in the 

canister

Drain valve clogged or 

defective

Verify that drain valve operates freely when activated. Clean 

valve and replace coil or valve if defective. Flush canister 

several times and replace if arcing persists.

Improper water supply

If water is commercially softened, reconnect humidifier to 

raw water supply, drain canister, and restart If connected to 

hot supply, reconnect to cold water.

Insufficient drain rate

Increase drain rate by adjusting % pot on circuit board 

above the preset 70% to roughly 80%.

Excessive iron content in 

water

Analyze iron content of water. If it exceeds 0.1 mg./l, install 

a filter to remove iron from water supply.

On cold startup, canister 

fills, high water alarm 

activates and humidifier 

fails to reach full amperage

Conductivity of water too low

Drain canister and add one Alka-Seltzer tablet to canister. 

Refill. Turn the % pot to roughly 60%. Restart humidifier. If 

amperage rises rapidly, it may be necessary to dilute the 

water to prevent blown fuses. If it rises too slowly, add 

another Alka-Seltzer tablet.

On cold startup, canister 

fills, high water alarm 

activates and humidifier 

fails to reach full amperage

Fill solenoid not closing tightly

If humidifier returns to canister full condition, verity that the 

fill solenoid closes tightly.

Reheat will not operate; 

contactor not pulling in

Control not calling for heat

Check monitor status.

Reheat safety stat open

Jumper between terminals P34-1 and P34-2. If reheat operates, 

safety is open. Remove jumper. Replace safety.

Reheat not operating; 

contactor pulling in

Heater burned out

Turn Off power and check heater continuity with Ohm meter.

NOTE:
Reheat element sheaths and fins are manufactured with stainless steel. Regular inspections