Manual Morco GB24 Series II (page 6 of 36) (English)

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SECTION 1 - USERS INSTRUCTIONS

To unblock a frozen condensate pipe;

1. Follow the routing of the plastic pipe from its exit point on the

appliance, through its route to its termination point.

Locate the frozen blockage. It is likely that the pipe is frozen

at the most exposed point external to the building or where

thereissomeobstructiontoow.Thiscouldbeattheopen

end of the pipe, at a bend or elbow, or where there is a dip in

the pipe in which condensate can collect. The location of the

blockageshouldbeidentiedascloselyaspossiblebefore

taking further action.

2. Apply a hot water bottle, microwaveable heat pack or a warm

damp cloth to the frozen blockage area. Several applications

may have to be made before it fully defrosts. Warm water

can also be poured onto the pipe from a watering can or

similar. DO NOT use boiling water.

3. Caution when using warm water as this may freeze and

cause other localised hazards.

Oncetheblockageisremovedandthecondensatecanow

freely, reset the appliance. (Refer to “To Light the boiler”)

If the appliance fails to ignite, call your Gas Safe Registered Engineer,

orinothercountriesaqualiedandcompetentGasInstaller.

Preventative solutions

During cold weather, set the boiler stat to maximum, (Must return

to original setting once cold spell is over)

Place the heating on continuous and turn the room stat down to 15ºC

overnight. (Return to normal after cold spell).

Escape of gas

Should a gas leak or fault be suspected contact the Gas Supplier

without Delay. TURN OFF ALL GAS SUPPLIES.

Do NOT search for gas leaks with a naked ame.

Cleaning

For normal cleaning simply dust with a dry cloth.

To remove stubborn marks and stains, wipe with a damp cloth

andnishoffwithadrycloth.

DO NOT use abrasive cleaning materials.

Maintenance

The appliance should be serviced at least once a year by a Gas

SafeRegisteredEngineer,orinothercountriesaqualiedand

competent Gas Installer.

Loss of system water pressure

The pressure gauge indicates the central heating system

pressure. If the pressure is seen to fall below the original

installation pressure of 1-2 bar over a period of time then a water

leak may be indicated. In this event re-pressurise the boiler.

If unable to do so or if the pressure continues to drop a Gas

SafeRegisteredEngineer,orinothercountriesaqualiedand

competent Gas Installer should be consulted.

INDICATED BY “F1” (LOW WATER PRESSURE) - THE BOILER

WILL NOT OPERATE IF THE PRESSURE HAS REDUCED TO

LESS THAN 0.3 BAR UNDER THIS CONDITION.

Condensate Drain

Thisapplianceisttedwithasiphoniccondensatetrapsystem

that reduces the risk of the appliance condensate from freezing.

However should the condensate pipe to this appliance freeze,

please follow these instructions:

a. If you do not feel competent to carry out the defrosting

instructions below please call your local Gas Safe Registered

Engineer,orinothercountriesaqualiedandcompetentGas

Installer for assistance.

If you do feel competent to carry out the following instructions

please do so with care when handling hot utensils. Do not attempt

to thaw pipework above ground level.

If this appliance develops a blockage in its condensate pipe, its

condensate will build up to a point where it will make a gurgling

noise prior to locking out an “L2” fault code. If the appliance is

reset it will make a gurgling noise prior to it locking out on a failed

ignition “L2” code.

MECHANICAL 24 HOUR TIMER

PROGRAMMING THE TIMER

Decide what times you would like the timeswitch to switch ON and OFF.

2. Push segments towards the programme ring for an OFF period and

push away from ring for an ON period. The minimum switching

interval is 15 minutes and this can be increased in 15 minute steps.

3. Bring the timeswitch into the correct condition by manually turning

the programme ring clockwise through a 24 hour cycle.

4. Turn the programme ring clockwise until the correct time of day on

the ring lines up with the time indicator.

Note. The segment dial can be turned when the time controller is

operating. In case of power failure, re-adjust the time controller to the

correct time of day, turning the dial in a clockwise direction.

Permanent Override

By rotating the central switch so that the symbol (

1) lines up with the

time indicator ( ) the unit will be permanently ON.

With the symbol (

) lining up with the time indicator ( ) the unit acts as

a timeswitch.

With the symbol (

) lining up with the time indicator ( ) the unit will be

permanently OFF.

Time & Control

Indicator

24hr Programme Ring

Timer control segments

1 Segment = 15 mins

Push towards programme ring = OFF

Push away from programme ring = ON

OFF segment

ON segment

Permanently ON

Permanently OFF

Timer Control

PRESSURE GAUGE

preheat

min

max

mode

reset

off

status burner

max

We have this Boiler fitted in our Caravan and not had a trouble till we had the boiler serviced since then the boiler will deal with the hot water but if you put it onto timer for the central heating the boiler comes in and when it gets to temperature goes out but then when the temperature drops the boiler does not come back in and shows L-2 which means it’s locked out please advice what can be the trouble thankyou Submitted on 10-11-2021 at 19:52
Reply Report abuse
- condensing tack requires cleaning maybe Answered on 25-11-2023 at 18:25
  Vote up Report abuse
Je voudrais savoir pourquoi s affiche sur l écran de contrôle F 9 qui clignote. Et pas d eau chaude. Submitted on 29-6-2021 at 18:11
Reply Report abuse
Hot water working but no heating and no fault codes Submitted on 12-4-2021 at 18:39
Reply Report abuse

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Morco GB24 Series II Manual

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