MTD 400 Manuel de service télécharger pdf (Page 51)

51GB 01/2009 AWR MTD - AWR MTD/B

Low suction pressure

(less than 3.2 bars)*

Low utility water inlet temperature

Low outside water inlet temperature

Thermostatic expansion valve faulty or blocked

Blocked water filter

Blocked plate heat exchanger

Check

Low discharge pressure

(less than 12 bars)*

Low utility water inlet temperature

Check

Air in water circuit Vent

Insufficient refrigerant content Check

Moisture in the refrigerant circuit (flow indicator -

moisture yellow)

Empty and refill

Faulty operation of outside heat exchanger control

(pressure regulating valves)

Check

High suction pressure

(greater than 10 bars)*

High utility water inlet temperature

Thermostatic expansion valve faulty or excessively

open

Check

High discharge pressure

(greater than 23 bars)*

High outside water temperature

High utility water inlet temperature

Insufficient water flow-rate in outside heat exchanger

(cooling mode)

Insufficient water flow-rate in utility heat exchanger

(heating mode)

Check

Check pump operation

Faulty operation of outside heat exchanger control

(pressure regulating valves)

Check

Air in water circuit (heating mode) Vent

Excessive refrigerant content

Check

*Values indicative only

FAULT CAUSE SOLUTION

USEFUL INFORMATION

U I A

For information on technical assistance and obtaining spare parts, contact:

TECHNICAL SERVICE DEPARTMENT

CLIMAVENETA HOME SYSTEM S.R.L. ROOM AIR-CONDITIONING

via. L. Seitz, 47 - 31100 Treviso (ITALY)

www.climaveneta.it - [email protected]

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MTD 400 Manuel de service Page 51

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