Nortec MH SERIES User Manual download pdf (Page 34)

10-30

Page 30

2008-12-03

1.2.2 Unit Faults

Warning Error Cause Remedy

LED Display LED Display

External safety chain is

open

Red

and

green

flash

-- Air proving interlock

open.

If applicable,

check/turn on fan.

Air flow monitor

triggered

Check fan/filter of

the fan system.

Safety humidistat

triggered.

Wait, if applicable,

check safety

humidistat

Error level senso

r

Error level senso

r

Red

flashes

Red

lights

The level sensor is

blocked or defective

(broken or short-

circuited).

Check/clean or

replace level

sensor. Check level

sensor with

ohmmeter: If no

water is in the tub,

the circuit of the

level sensor must

be closed. If the

water in the tub is

on maximum

level

sensor must be

open.

Maximum filling time

exceeded (30 minutes)

Maximum filling time

exceeded (more than 4

hours)

Red

flashes

Red

lights

Note: This error

message is reset

automatically as

soon as the water

supply functions

again.

Water supply

blocked/shut-off valve

closed/water pressure

too low. Water

treatment unit (fully

demineralised water)

is regenerating.

Check water supply

(filter, pipes, etc.),

Check/open shut-

off valve, Check

water pressure.

Inlet valve blocked or

defective.

Check strainer in

the inlet valve,

clean if necessary.

Replace inlet valve.

Drain valve open,

blocked in open

position or not

electrically

connected. Drain

valve is open unless

powered

Check/replace

drain valve,

connect drain

valve.

Leakage in the water

drain system.

Check/seal water

drain system.

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