User manual TOSHIBA ESTIA SERVICE MANUAL

[. . . ] A09-002 AIR TO WATER HEAT PUMP SERVICE MANUAL Model name: Hydro Unit HWS-802XWHM3-E HWS-802XWHT6-E HWS-1402XWHM3-E HWS-1402XWHT6-E HWS-1402XWHT9-E Outdoor Unit HWS-802H-E HWS-1102H-E HWS-1402H-E Hot Water Cylinder HWS-1501CSHM3-E(-UK) HWS-2101CSHM3-E(-UK) HWS-3001CSHM3-E(-UK) Contents 1 SAFETY PRECAUTIONS . 65 9-1-2. Check for any miswiring of the connection cables between the hydro unit and the outdoor unit . 91 9-4-3. Temperature sensor, temperature-resistance characteristic table . 155 2 1 SAFETY PRECAUTIONS The unit and this service guide list very important safety precautions. [. . . ] Compressor lock O × × × × × × × × 1. Check the resistance value and connection of the discharge sensor (TD). Check the resistance value and connection of the heat exchange temperature sensor (TE). Check the resistance value and connection of the heat exchange temperature sensor (TL). Check the resistance value and connection of the outdoor temperature sensor (TO). Check the resistance value and connection of the suction temperature sensor (TS). Check the resistance value and connection of the heat-sink temperature sensor (TH). Check for any wrong installation of the heat exchange temperature sensor (TE) and the suction temperature sensor (TS). 1 85 99 85 99 86 99 86 99 F06 O 1 F07 O 1 F08 O 1 F12 O 1 100 F13 O 1 100 F15 O 1 100 F31 O 1 100 H01 O × 1. Check that the service valve is fully open. 8 91 H02 1 When the input current is more than zero 20 sec or later after the compressor activation and the activation has not been completed. Replace the outdoor inverter control board. 8 92 H03 O 8 92 70 Diagnostic functional operation Check code Operational cause Backup Automat present ic reset Determination and action Number of abnormalities Detailed for item confirmation Operation of case thermostat When the case thermostat exceeds 125°C. Cut J800-J803. 4 92 L10 Unset service PC board jumper Jumpers J800-J803 have not been cut. The communication between the outdoor PC board MUCs error No communication signal between IPDU and CDB. The outlet temperature error When the discharge temperature sensor (TD) exceeds 111°C. O × × 1 92 L29 O 1. Replace the outdoor control board. 1 93 P03 O × × × 1. Check the resistance value of the discharge temperature sensor (TD). 4 94 P04 P05 The high pressure switch error The power supply voltage error When the power supply voltage is extremely high or low. Overheating of heat-sink error When the heat-sink exceeds 105°C. O O 10 1. Check the thread fastening and heat-sink grease between the outdoor control board and the heatsink. Check the resistance value of the discharge temperature sensor (TD) and the suction temperature sensor (TS). Check the operation of the 4-way valve unit or the coil characteristics. Check the resistance value of the heat exchange temperature sensor (TE) and the suction temperature sensor (TS). 4 94 94 P07 O × 4 95 P15 Detection of gas leak When the discharge temperature sensor (TD) exceeds 106°C for consecutive 10 min. When the suction temperature sensor (TS) exceeds 60°C for cooling or 40°C for heating for 10 consecutive min. O × 4 95 P19 The 4-way valve inversion error When the heat exchange temperature sensor (TE) exceeds 30°C or the suction temperature sensor (TS) exceeds 50°C during the heat pump operation. O × 4 96 71 Diagnostic functional operation Check code Operational cause Backup Automat present ic reset Determination and action Number of abnormalities Detailed for item confirmation P20 High pressure protection operation When an abnormal stop occurs due to the high pressure release control. [. . . ] 2) Perform vacuuming until the vacuum low pressure gauge shows 1(mmHg). With the valve closed, vacuuming between the outdoor unit liquid valve and the pulse motor valve may fail. How to make pulse motor valve forcible full open · Turn on the electric leakage breaker. · Set the SW804 dip switch 1 and 3 on the outdoor unit control board to ON. [. . . ]