Electra OU10-36 ST Service Manual download pdf (Page 103)

14-2

TROUBLESHOOTING

SM DNGRPM 1-E.4 GB

ATTENTION : check for broken or loose cable lugs ﬁrst

NO SYMPTON PROBABLE CAUSE CORRECTIVE ACTION

9.

Only indoor fan and

compressor working.

Outdoor fan blocked. - Remove obstructions.

10.

Only indoor fan

working.

-Run capacitor of outdoor

fan motor faulty. -Windings of

outdoor fan are shorted.

- Replace capacitor. -Replace motor.

11.

No cooling or heating

takes place, indoor and

outdoor fans working.

- Overload safety device on

compressor is cut out (low

voltage or high temperature)

- Compressor run capacitor

faulty. - Compressor windings

are shorted.

- Check for proper voltage, switch off

power and try again after one hour. -

Replace compressor capacitor. - Replace

compressor.

12.

No air supply at indoor

unit, compressor

operates.

-Indoor fan motor is blocked

or turns slowly. -indoor fan

run capacitor faulty. -motor

windings are shorted.

- Check voltage, repair wiring if

necessary. -Check fan wheel if it is

tight enough on motor shaft, tighten if

necessary. -Replace indoor fan motor.

13.

Partial, limited air

supply at indoor unit.

Lack of refrigerant (will

accompanied by whistling

noise) cause ice formation on

indoor unit coil in cooling mode.

-Charge the unit after localizing leak.

14.

Water accumulates and

overﬂow from indoor

unit section.

Drain tube or spout of drain pan

clogged.

-Disassemble plastic drain tube from

spout of indoor unit drain pan.

15.

Water dripping from

outdoor unit base. (in

heating mode)

Water drain outlet is clogged.

-Open outdoor unit cover clean out water

outlet clean the base inside througly.

16.

Freeze-up of outdoor

coil in heating mode,

poor heating effect

in room, indoor fan

operates.

-Faulty outdoor thermistor. -

Faulty control cable. - Outdoor

temperature is too low (below

-2°C) -Outdoor unit air outlet is

blocked.

-Replace thermistor. - Repair control

cable. - Shut unit off, outdoor temp. is

below design conditions and cannot

function properly. -Remove obstructions.

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