CW3 / CW6 Diagnostic Guide – Use MagIQtouch Service Menu to Test Pumps, Fans & Drain Faults
Quick Summary
- Always use the MagIQtouch Service Menu first to test components
- The Service Menu allows you to turn pumps, fans, drain, and solenoid ON/OFF individually
- Most faults can be confirmed without replacing parts
- Common faults:
- No water (FC02) → solenoid or supply
- No drain (FC04) → hose blocked or valve not opening
How to Access the MagIQtouch Service Menu
The Service Menu is used to manually run and test components (pumps, fans, drain, solenoid) for fault finding.
Steps to Access the Service Menu
- From the Home Screen, select Menu
- Select Settings
- Scroll down and select Service
- Enter the service PIN 7378 (if prompted)
- Select Service Operating Screen
Click to view YouTube Video - Accessing Climate Wizard MagIQtouch Service Screen CW3 / CW6
What You Should See
Once in the Service Operating Screen:
- You can turn components ON/OFF individually:
- Fill (Solenoid)
- Pumps
- Drain Valve
- Fans
This allows you to test each component directly, not just rely on fault codes
This is how components are checked during commissioning
Field Tip
- If you’re troubleshooting and haven’t accessed the Service Menu yet → start there first
- It’s the quickest way to confirm:
- Component working → check wiring / sensors
- Component not running → check power / replace
Simple Rule
No Service Menu test = No confident diagnosis
Click to view YouTube Video - Accessing Climate Wizard MagIQtouch Service Screen CW3 / CW6
Start Here – Use the Service Menu First
Before checking anything else:
- Go to Service Menu
- Run these tests:
- Fill (solenoid)
- Pump
- Drain
- Fan
This confirms:
- If the component works
- If the issue is electrical vs mechanical
Quick Diagnosis Using Service Menu
| Test | What You Do | What It Tells You |
|---|---|---|
| Fill test | Turn solenoid ON | Confirms water supply + solenoid |
| Pump test | Run pump | Confirms pump operation |
| Drain test | Open drain | Confirms valve operates + hose clear |
| Fan test | Run fan speeds | Confirms fan operation |
Fault Code Quick Reference (Use with Service Menu)
| Fault Code | Meaning | What to Do Using Service Menu | Most Likely Cause |
|---|---|---|---|
| FC02 | No water detected | Run fill test | Solenoid or no supply |
| FC03 | No high probe detection | Run fill + check level | Supply / flow issue |
| FC04 | Won’t drain | Run drain test | Blocked hose or valve not operating |
| FC07 | Fan issue | Run fan test | Motor or wiring |
Step-by-Step Troubleshooting (Service Menu First)
1. Water Fill Fault (FC02 / FC03)
Use Service Menu:
- Turn Fill ON
What to Look For
❌ No water entering unit
This means water is not getting into the tank
Check:
Is there voltage at the solenoid?
- ❌ No voltage → wiring or control issue
- ✅ Voltage present → solenoid issue
Is the water supply turned on?
Is the isolation valve open?
Is the inlet strainer blocked?
Most common causes:
- Blocked inlet strainer
- Failed solenoid (not opening)
- No water supply or low pressure
Water flows into the tank
Water supply is OK — issue is likely detection, not filling
Check:
- Are the water probes clean?
- Are the probes connected properly?
- Is the tank actually reaching the correct level?
Most common causes:
- Dirty probes not detecting water
- Probe wiring loose or incorrect
- Water level too low to reach probes
2. Drain Fault (FC04)
Use Service Menu:
- Run Drain test
What to Look For
❌ No water draining
Drain valve is not opening or water can’t get out
Check:
- Is the drain valve opening?
- Is there power to the drain valve?
Most common causes:
- Failed drain valve
- Electrical issue to valve
- Debris stuck in valve
Water drains slowly / partially
Water is trying to drain but is restricted
Check:
- Drain hose for:
- Kinks
- Crushing
- Excessive length
- Any blockages in hose or fittings
Most common causes:
- Restricted drain hose
- Poor hose routing (too long or too many bends)
- Debris buildup in hose
3. Pump Faults
Use Service Menu:
- Turn Pump ON
What to Look For
❌ Pump not running
Pump is not operating at all
Check:
- Is there voltage to the pump?
- ❌ No voltage → wiring / board issue
- ✅ Voltage present → pump faulty
Most common causes:
- Failed pump
- Loose or damaged wiring
- Control/output issue
Pump runs but no water movement
Pump is working but water isn’t circulating
Check:
- Pump strainer for blockage
- Water lines for:
- Blocked hoses
- Kinks
Most common causes:
- Blocked pump strainer
- Blocked distribution hoses
- Airlock or restriction in system
4. Fan Faults
Use Service Menu:
- Run Fan test (Speed 1–10)
What to Look For
❌ Fan not running at all
No operation from the motor
Check:
- Is there power to the motor?
- Check motor wiring and connections
Most common causes:
- Failed fan motor
- Wiring fault
- Control issue
Fan runs but has issues
Fan operates but not correctly
Look for:
- Noise
- Vibration
- Inconsistent speed
Most common causes:
- Debris in fan
- Motor bearing wear
- Mechanical imbalance
Service Menu – What It’s For
| Function | What It Does | What It Helps You Confirm |
|---|---|---|
| Fill / Solenoid | Brings water into tank | Water supply + solenoid working |
| Pump | Circulates water | Pump + water movement |
| Drain | Empties tank | Drain valve + hose clear |
| Fan | Runs airflow system | Motor + airflow operation |
Each component can be tested on its own, so you can quickly isolate the fault instead of guessing
Field Tips
- Always use Service Menu before replacing parts
- If it works in Service Mode → the component itself is OK
If a component runs in Service Mode:
The issue is usually:
- Wiring
- Sensors (probes)
- Installation issue
❌ If a component does NOT run in Service Mode:
The issue is likely:
- No power
- Failed component
Most Common Faults
FC02 (No water):
- Blocked inlet strainer
- Faulty solenoid
FC04 (Drain fault):
- Blocked/restricted drain hose
- Failed drain valve
Simple Troubleshooting Flow
- Run Service Menu test
- Does the component operate?
✅ YES – Component works
? The problem is NOT the part
Check:
- Probes / sensors
- Wiring
- Installation issues
❌ NO – Component does not work
? Focus on:
- Power supply
- Wiring
- Replace component if required
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