Troubleshooting; Indications On Display - Nilfisk-Advance MH 1C Instructions For Use Manual

8 Troubleshooting

8.1

Indications on Display

Indication lights
1) Options / model variants
Original instruction
Cause
> The light is constant
- The appliance is ready for
operation
> Flashing light
- Flow sensor fault
- Water tap closed or water
shortage
- Detergent tank empty
- Pressure regulation on the
safety control blocks or
the VarioPress lance is
1)
set to low water volume
- Machine scaled
- Spray gun is leaking
- High pressure hose,
coupling or line system is
leaking
- Motor is overheated 3)
> Constant light
- Low fuel level
> Flashing light
- Low Nilfi sk AntiStone
level 1)
> Constant light
- Service interval has
expired
> Flashing light
- Service interval due in 20
hours
- Microprocessor error
> Constant light
- Boiler overheated.
Exhaust sensor (EXT-H)
has cut off fuel supply
- Insuffi cient water fl ow
- Machine scaled
- Boiler not serviced
> Constant light
- Flame sensor (B7) is
sooted
- Ignition or fuel system
failure
MH 2C/MH 2M
For MH 1C only. For
3)
Remedy
> Refuel detergent or set SDR
value to "0"
Turn main switch to position
"OFF" - let the machine cool
down
Remove/disconnect exten-
sion cable
> Top up fuel
> Cold water operation is pos-
sible
> Top up Nilfi sk AntiStone
> Contact Nilfi sk Service
> Contact Nilfi sk Service
> Machine shutdown
> Machine shuts down. Cold
water operation is possible.
> Check water supply
> Contact Nilfi sk Service
> Clean fl ame sensor (B7) (see
chapter 7.2.4)
> Contact Nilfi sk Service
> Cold water operation is pos-
sible
overheating warning see next page.
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