Views
6 months ago

HAIMA 7 Service Manual(MT)-U Heater and air conditioning system

Troubleshooting Step

Troubleshooting Step Inspection Action 4 Inspect airflow mode actuator • Inspect airflow mode actuator. (see u-30, airflow module actuator inspection) • Is it normal? *5 Inspect continuity of wiring harness between rear climate control unit and airflow mode actuator. • Turn ignition switch to on position. • Disconnect rear climate control unit connector from air mix actuator. • Inspect following connections for continuity: — Terminal d (rear climate control unit) — Terminal g (airflow mode actuator) — Terminal i (rear climate control unit) — Terminal a (airflow mode actuator) — Terminal k (rear climate control unit) — Terminal b (airflow mode actuator) — Terminal m (rear climate control unit) — Terminal c (airflow mode actuator) — Terminal o (rear climate control unit) — Terminal f (airflow mode actuator) • Are these circuits normal? *6 Inspect wiring harness between rear climate control unit and air mix actuator for short to ground • Inspect whether following terminals is short to ground. — Terminal d (rear climate control unit) — Terminal g (airflow mode actuator) — Terminal i (rear climate control unit) — Terminal a (airflow mode actuator) — Terminal k (rear climate control unit) — Terminal b (airflow mode actuator) — Terminal m (rear climate control unit) — Terminal c (airflow mode actuator) — Terminal o (rear climate control unit) — Terminal f (airflow mode actuator) • Are these circuits short? Yes No Yes No Yes No Go to next step. Replace airflow mode actuator, go to step 9. Go to next step. Repair wiring harness between rear climate control unit and airflow mode actuator, go to step 9. Go to next step. Repair wiring harness between rear climate control unit and airflow mode actuator, go to step 9. U-26

Troubleshotting Step Inspection Action 7 Inspect rear a/c unit • Is there any foreign material or obstruction in a/c unit airflow mode control valve? Yes Remove obstruction, go to step 9 No Go to next step. 8 Inspect rear a/c unit airflow mode control valve. • Inspect rear a/c unit airflow mode control valve. — Is there any damage or crack at airflow mode valve? — Is airflow mode control valve firmly installed in proper position? • Are all above items normal? Yes No Replace the rear climate control unit, go to next step. Replace airflow mode control valve or install it in proper position, go to next step. 9 Verify whether malfunction symptom occurs after repair. • Does airflow mode change? Yes Troubleshooting completed. Explain causes to customer. No Recheck malfunction symptoms, then repeat from step 1 if malfunction reoccurs. Ix. Temperature control is failed for rear climate control unit. 9 Temperature control is failed to rear climate control unit Malfunction symptom Possible causes Malfunction in air mix system or heater pipeline of rear a/c unit. • Malfunction in air mix actuators’ +5v signal circuit. Steps 2-5 • Malfunction in air mix actuators’ voltage divider input signal circuit. Steps 6-8 • Malfunction in air mix actuators’ gnd signal circuit. Steps 9-11 • Malfunction in air mix actuators’ motor driving signal circuit. Steps 12-14 • Malfunction in rear a/c unit air mix control links or rockers. Step 15 • Malfunction in air mix actuator. Step 17 • Malfunction in rear a/c unit air mix control valve. Steps 18, 19 • Malfunction in heater pipeline. Step 20 When performing an asterisked (*) troubleshooting, shake the wiring harness and connectors to verify whether the intermittent malfunctions are caused by poor contact. If there is a problem, check to make sure connectors, terminals and wiring harness are connected correctly and undamaged. U-27

Multi Air Conditioning System for Buildings
Split multi air conditioning systems
for service personnel only - Hitachi Air Conditioning Products
Find the Best Air Conditioning System for Your Home
Energy Saving Tips for Air Conditioning Systems
Air to water Heat Pump System - Heronhill Air Conditioning Ltd
VRF Air Conditioning System 8HP / 10HP 22.4kW / 28kW ... - Fujiaire
AIR LOCKER SERVICE & PARTS MANUAL - ARB
2011 Edition Raisbeck Systems - Banyan Air Service
Hot Air Tool Air Heaters - Osram Sylvania
Sky Air Ambulance provides 24*7 Services from Ranchi
Doctors Air Ambulance Service in Hyderabad - 24*7 Hours Available
Hire 24*7 Emergency Medical Air Ambulance Services in Aligarh and Ahmadabad
Chapter 7 - NAS Modernization - Air Transportation Systems Lab
Advantage Air Evaporative Air-conditioning
mts-7 foot pedal - GSNA.com
REFRIGERATION AND AIR CONDITIONING
293 Hydraulic Service Manifold - MTS
SERVICE MANUAL - Rice Lake Weighing Systems
See the 200 System Service Manual - Ioline Corporation
GEA PHE Systems EcoServe – 24/7 After Sales & Service
E:\Martin\Pritesh\Air-conditioning Sector Report\Air-conditioning ...
Brochure - Barron Heating and Air Conditioning