# Paradox Evo 848 Programming

Older Evo model programming

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#### Basic Programming

**Location 521** (Dialer options)
- LED 3, 4, 5, 6 must be **ON**
- All others **OFF**

**Location 550** (Format Contact ID)
- Enter **5555**

**Location 551**
- Enter **[4-digit account code]**

**Location 561**
- Enter **[Phone number]**

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#### Important Notes

**After Programming:**
- Always **REBOOT** the panel after completing programming

**Account Code Rules:**
- **NEVER** use account codes starting with "0" (e.g., 0001)
- Use 1001 instead
- Can use hex A: 1AA1 (press "stay" button for hex A)

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#### Troubleshooting

1. Panel not communicating after programming
   - Reboot is mandatory
   - Check all LEDs in location 521

2. Account code issues
   - Avoid leading zeros
   - Try hex characters if numeric codes fail